-        if not formats:
-            # Old API, does not work for some tracks (e.g.
-            # https://soundcloud.com/giovannisarani/mezzo-valzer)
-            # and might serve preview URLs (e.g.
-            # http://www.soundcloud.com/snbrn/ele)
-            format_dict = self._download_json(
-                track_base_url + '/streams', track_id,
-                'Downloading track url', query=query, fatal=False) or {}
-
-            for key, stream_url in format_dict.items():
-                if invalid_url(stream_url):
-                    continue
-                format_urls.add(stream_url)
-                mobj = re.search(r'(http|hls)_([^_]+)_(\d+)_url', key)
-                if mobj:
-                    protocol, ext, abr = mobj.groups()
-                    add_format({
-                        'abr': abr,
-                        'ext': ext,
-                        'url': stream_url,
-                    }, protocol)
-
-        if not formats:
-            # We fallback to the stream_url in the original info, this
-            # cannot be always used, sometimes it can give an HTTP 404 error
-            urlh = self._request_webpage(
-                HEADRequest(info.get('stream_url') or track_base_url + '/stream'),
-                track_id, query=query, fatal=False)
-            if urlh:
-                stream_url = urlh.geturl()
-                if not invalid_url(stream_url):
-                    add_format({'url': stream_url}, 'http')
-