code: function addTrackToNewPlaylist(options) {
      return new Promise(function (resolve, reject) {
          var form = new FormData();
          form.append('format', 'json');
  
          if (!options.tracks) {
              return reject('Error while addTrackToNewPlaylist options.tracks is null');
          } else {
              _.each(options.tracks, function (track) {
                  form.append('playlist[tracks][][id]', track.id);
              });
          }
          if (!options.title) {
              return reject('Error while addTrackToNewPlaylist options.title is null');
          } else {
              form.append('playlist[title]', options.title);
          }
          if (!options.sharing) {
              return reject('Error while addTrackToNewPlaylist options.sharing is null');
          } else {
              form.append('playlist[sharing]', options.sharing);
          }
          if (!options.oauth_token) {
              return reject('Error while addTrackToNewPlaylist options.oauth_token is null');
          } else {
              form.append('oauth_token', options.oauth_token);
          }
  
          form.getLength(function (err, length) {
  
              fetch(`https://api.soundcloud.com/playlists?oauth_token=${options.oauth_token}`, {
                  method: 'POST',
                  body: form,
                  headers: {'content-length': length}
              }).then(function (res) {
  
                  if (res.status === 201) {
                      if (DEBUG_MODE_ON) {
                          console.log(`INFO: addTrackToNewPlaylist, OK -> ${res.statusCode}.`);
                      }
                      return res.json();
                  } else {
                      return null;
                  }
              }).then(function (json) {
                  if (!json) {
                      reject();
                  } else {
                      if (DEBUG_MODE_ON) {
                          console.log('INFO: addTrack successful');
                      }
                      resolve(json);
                  }
              }).catch(function (e) {
                  reject(e);
              });
  
          });
      });
  }
docs: Add track to new playlist
  @param options
  @param cb
  @returns {*}