Spotify has just announced some neat new touch and gesture features for its iOS app that should make it easier to discover new music and build playlists. A new feature called Touch Preview allows you to press and hold on a track to hear a short snippet, so you can work out if you want to listen to it or not. Dragging your finger to another track while holding will take you to a new track; tapping will play the song as usual.
If you're already listening to music, Spotify will pause it, play the preview, then resume playing when you let go. There's also new gesture support, too. You can now swipe a song to the left to add it to My Music, or swipe it to the right to add it to your play queue. It's like Tinder for music.