+    _VALID_URL = r'''(?x)^(?:https?://)?
+                    (?:(?:(?:www\.|m\.)?soundcloud\.com/
+                            (?!stations/track)
+                            (?P<uploader>[\w\d-]+)/
+                            (?!(?:tracks|albums|sets(?:/.+?)?|reposts|likes|spotlight)/?(?:$|[?#]))
+                            (?P<title>[\w\d-]+)/?
+                            (?P<token>[^?]+?)?(?:[?].*)?$)
+                       |(?:api(?:-v2)?\.soundcloud\.com/tracks/(?P<track_id>\d+)
+                          (?:/?\?secret_token=(?P<secret_token>[^&]+))?)
+                    )
+                    '''
+    IE_NAME = 'soundcloud'
+    _TESTS = [
+        {
+            'url': 'http://soundcloud.com/ethmusic/lostin-powers-she-so-heavy',
+            'md5': 'ebef0a451b909710ed1d7787dddbf0d7',
+            'info_dict': {
+                'id': '62986583',
+                'ext': 'mp3',
+                'title': 'Lostin Powers - She so Heavy (SneakPreview) Adrian Ackers Blueprint 1',
+                'description': 'No Downloads untill we record the finished version this weekend, i was too pumped n i had to post it , earl is prolly gonna b hella p.o\'d',
+                'uploader': 'E.T. ExTerrestrial Music',
+                'uploader_id': '1571244',
+                'timestamp': 1349920598,
+                'upload_date': '20121011',
+                'duration': 143.216,
+                'license': 'all-rights-reserved',
+                'view_count': int,
+                'like_count': int,
+                'comment_count': int,
+                'repost_count': int,
+            }
+        },
+        # geo-restricted
+        {
+            'url': 'https://soundcloud.com/the-concept-band/goldrushed-mastered?in=the-concept-band/sets/the-royal-concept-ep',
+            'info_dict': {
+                'id': '47127627',
+                'ext': 'mp3',
+                'title': 'Goldrushed',
+                'description': 'From Stockholm Sweden\r\nPovel / Magnus / Filip / David\r\nwww.theroyalconcept.com',
+                'uploader': 'The Royal Concept',
+                'uploader_id': '9615865',
+                'timestamp': 1337635207,
+                'upload_date': '20120521',
+                'duration': 227.155,
+                'license': 'all-rights-reserved',
+                'view_count': int,
+                'like_count': int,
+                'comment_count': int,
+                'repost_count': int,
+            },
+        },
+        # private link
+        {
+            'url': 'https://soundcloud.com/jaimemf/youtube-dl-test-video-a-y-baw/s-8Pjrp',
+            'md5': 'aa0dd32bfea9b0c5ef4f02aacd080604',
+            'info_dict': {
+                'id': '123998367',
+                'ext': 'mp3',
+                'title': 'Youtube - Dl Test Video \'\' Ä↭',
+                'description': 'test chars:  \"\'/\\ä↭',
+                'uploader': 'jaimeMF',
+                'uploader_id': '69767071',
+                'timestamp': 1386604920,
+                'upload_date': '20131209',
+                'duration': 9.927,
+                'license': 'all-rights-reserved',
+                'view_count': int,
+                'like_count': int,
+                'comment_count': int,
+                'repost_count': int,
+            },
+        },
+        # private link (alt format)
+        {
+            'url': 'https://api.soundcloud.com/tracks/123998367?secret_token=s-8Pjrp',
+            'md5': 'aa0dd32bfea9b0c5ef4f02aacd080604',
+            'info_dict': {
+                'id': '123998367',
+                'ext': 'mp3',
+                'title': 'Youtube - Dl Test Video \'\' Ä↭',
+                'description': 'test chars:  \"\'/\\ä↭',
+                'uploader': 'jaimeMF',
+                'uploader_id': '69767071',
+                'timestamp': 1386604920,
+                'upload_date': '20131209',
+                'duration': 9.927,
+                'license': 'all-rights-reserved',
+                'view_count': int,
+                'like_count': int,
+                'comment_count': int,
+                'repost_count': int,
+            },
+        },
+        # downloadable song
+        {
+            'url': 'https://soundcloud.com/oddsamples/bus-brakes',
+            'md5': '7624f2351f8a3b2e7cd51522496e7631',
+            'info_dict': {
+                'id': '128590877',
+                'ext': 'mp3',
+                'title': 'Bus Brakes',
+                'description': 'md5:0053ca6396e8d2fd7b7e1595ef12ab66',
+                'uploader': 'oddsamples',
+                'uploader_id': '73680509',
+                'timestamp': 1389232924,
+                'upload_date': '20140109',
+                'duration': 17.346,
+                'license': 'cc-by-sa',
+                'view_count': int,
+                'like_count': int,
+                'comment_count': int,
+                'repost_count': int,
+            },
+        },
+        # private link, downloadable format
+        {
+            'url': 'https://soundcloud.com/oriuplift/uponly-238-no-talking-wav/s-AyZUd',
+            'md5': '64a60b16e617d41d0bef032b7f55441e',
+            'info_dict': {
+                'id': '340344461',
+                'ext': 'wav',
+                'title': 'Uplifting Only 238 [No Talking] (incl. Alex Feed Guestmix) (Aug 31, 2017) [wav]',
+                'description': 'md5:fa20ee0fca76a3d6df8c7e57f3715366',
+                'uploader': 'Ori Uplift Music',
+                'uploader_id': '12563093',
+                'timestamp': 1504206263,
+                'upload_date': '20170831',
+                'duration': 7449.096,
+                'license': 'all-rights-reserved',
+                'view_count': int,
+                'like_count': int,
+                'comment_count': int,
+                'repost_count': int,
+            },
+        },
+        # no album art, use avatar pic for thumbnail
+        {
+            'url': 'https://soundcloud.com/garyvee/sideways-prod-mad-real',
+            'md5': '59c7872bc44e5d99b7211891664760c2',
+            'info_dict': {
+                'id': '309699954',
+                'ext': 'mp3',
+                'title': 'Sideways (Prod. Mad Real)',
+                'description': 'md5:d41d8cd98f00b204e9800998ecf8427e',
+                'uploader': 'garyvee',
+                'uploader_id': '2366352',
+                'timestamp': 1488152409,
+                'upload_date': '20170226',
+                'duration': 207.012,
+                'thumbnail': r're:https?://.*\.jpg',
+                'license': 'all-rights-reserved',
+                'view_count': int,
+                'like_count': int,
+                'comment_count': int,
+                'repost_count': int,
+            },
+            'params': {
+                'skip_download': True,
+            },
+        },
+        {
+            'url': 'https://soundcloud.com/giovannisarani/mezzo-valzer',
+            'md5': 'e22aecd2bc88e0e4e432d7dcc0a1abf7',
+            'info_dict': {
+                'id': '583011102',
+                'ext': 'mp3',
+                'title': 'Mezzo Valzer',
+                'description': 'md5:4138d582f81866a530317bae316e8b61',
+                'uploader': 'Micronie',
+                'uploader_id': '3352531',
+                'timestamp': 1551394171,
+                'upload_date': '20190228',
+                'duration': 180.157,
+                'thumbnail': r're:https?://.*\.jpg',
+                'license': 'all-rights-reserved',
+                'view_count': int,
+                'like_count': int,
+                'comment_count': int,
+                'repost_count': int,
+            },
+        }
+    ]
+
+    _API_V2_BASE = 'https://api-v2.soundcloud.com/'
+    _BASE_URL = 'https://soundcloud.com/'
+    _IMAGE_REPL_RE = r'-([0-9a-z]+)\.jpg'
+
+    _ARTWORK_MAP = {
+        'mini': 16,
+        'tiny': 20,
+        'small': 32,
+        'badge': 47,
+        't67x67': 67,
+        'large': 100,
+        't300x300': 300,
+        'crop': 400,
+        't500x500': 500,
+        'original': 0,
+    }
+
+    def _store_client_id(self, client_id):
+        self._downloader.cache.store('soundcloud', 'client_id', client_id)
+
+    def _update_client_id(self):
+        webpage = self._download_webpage('https://soundcloud.com/', None)
+        for src in reversed(re.findall(r'<script[^>]+src="([^"]+)"', webpage)):
+            script = self._download_webpage(src, None, fatal=False)
+            if script:
+                client_id = self._search_regex(
+                    r'client_id\s*:\s*"([0-9a-zA-Z]{32})"',
+                    script, 'client id', default=None)
+                if client_id:
+                    self._CLIENT_ID = client_id
+                    self._store_client_id(client_id)
+                    return
+        raise ExtractorError('Unable to extract client id')
+
+    def _download_json(self, *args, **kwargs):
+        non_fatal = kwargs.get('fatal') is False
+        if non_fatal:
+            del kwargs['fatal']
+        query = kwargs.get('query', {}).copy()
+        for _ in range(2):
+            query['client_id'] = self._CLIENT_ID
+            kwargs['query'] = query
+            try:
+                return super(SoundcloudIE, self)._download_json(*args, **compat_kwargs(kwargs))
+            except ExtractorError as e:
+                if isinstance(e.cause, compat_HTTPError) and e.cause.code == 401:
+                    self._store_client_id(None)
+                    self._update_client_id()
+                    continue
+                elif non_fatal:
+                    self._downloader.report_warning(error_to_compat_str(e))
+                    return False
+                raise
+
+    def _real_initialize(self):
+        self._CLIENT_ID = self._downloader.cache.load('soundcloud', 'client_id') or 'YUKXoArFcqrlQn9tfNHvvyfnDISj04zk'
+
+    @classmethod
+    def _resolv_url(cls, url):
+        return SoundcloudIE._API_V2_BASE + 'resolve?url=' + url
+
+    def _extract_info_dict(self, info, full_title=None, secret_token=None):
+        track_id = compat_str(info['id'])
+        title = info['title']
+
+        format_urls = set()
+        formats = []
+        query = {'client_id': self._CLIENT_ID}
+        if secret_token:
+            query['secret_token'] = secret_token
+
+        if info.get('downloadable') and info.get('has_downloads_left'):
+            download_url = update_url_query(
+                self._API_V2_BASE + 'tracks/' + track_id + '/download', query)
+            redirect_url = (self._download_json(download_url, track_id, fatal=False) or {}).get('redirectUri')
+            if redirect_url:
+                urlh = self._request_webpage(
+                    HEADRequest(redirect_url), track_id, fatal=False)
+                if urlh:
+                    format_url = urlh.geturl()
+                    format_urls.add(format_url)
+                    formats.append({
+                        'format_id': 'download',
+                        'ext': urlhandle_detect_ext(urlh) or 'mp3',
+                        'filesize': int_or_none(urlh.headers.get('Content-Length')),
+                        'url': format_url,
+                        'preference': 10,
+                    })
+
+        def invalid_url(url):
+            return not url or url in format_urls
+
+        def add_format(f, protocol, is_preview=False):
+            mobj = re.search(r'\.(?P<abr>\d+)\.(?P<ext>[0-9a-z]{3,4})(?=[/?])', stream_url)
+            if mobj:
+                for k, v in mobj.groupdict().items():
+                    if not f.get(k):
+                        f[k] = v
+            format_id_list = []
+            if protocol:
+                format_id_list.append(protocol)
+            for k in ('ext', 'abr'):
+                v = f.get(k)
+                if v:
+                    format_id_list.append(v)
+            preview = is_preview or re.search(r'/(?:preview|playlist)/0/30/', f['url'])
+            if preview:
+                format_id_list.append('preview')
+            abr = f.get('abr')
+            if abr:
+                f['abr'] = int(abr)
+            f.update({
+                'format_id': '_'.join(format_id_list),
+                'protocol': 'm3u8_native' if protocol == 'hls' else 'http',
+                'preference': -10 if preview else None,
+            })
+            formats.append(f)