cool app!
1. It's not easy to play because it's not multiple choice. Typing is way too hard on iphone. 2. It's hard to continue playing. You need to wait for your opponent and can only play one turn. Maybe try getting the player into the next round automatically with live players or more songs per round. 3. It's not as addictive and sticky as songpop of weak engagement loops.
Good first try but I think you might need to change the game a bit. Good luck!
regarding song choice...we provide both most popular songs and other songs from the same artist that are perhaps less popular. that way, the users can be introduced to new music that they may not have heard before!