Hi, this is very cool!!
I've noticed that with my 700songs it takes something like 5 seconds untill you can begin swiping. It would be nice if there would be some indication "app starting.. " or whatever until app can be used since you cant start swiping immediatly since nothing happens during that 5sec?!

Also the lyric-option is really cool!
U think if lyrics are not found, does it depend on bad metadata or the lyrics provider-site doesnt have that piece of lyric? if last one is the case could there be more sites from where it looks the lyrics for? well, dont know the logic but anyways