It's in E major. Which means that the next chord might be a diminished D. Or is that a C sharp minor? Or is it just an A?
The above process will be familiar to anyone who's sat down with an instrument and a burning desire to play their favourite track by that obscure band the internet hasn't heard of yet. Without any sheet music available, learning a little known song used to be a painful task of stopping a track every few seconds to work out which notes go where. Which is where PLAYER comes in.
By calling up your desired song on the app and hitting 'Learn', PLAYER analyses it for notation and musical structure, providing chord structure and information on what key it's in on a real-time display. Chord shapes for guitar, piano and ukulele can be called up, allowing you to play along with PLAYER's on screen guide. It also allows you to slow down sections of a track to practice harder parts.
Other features include a set list function which suggests songs similar to those you've been learning, and a chord editor for corrections or adding a twist to known standards. PLAYER is available for iOS devices here.
Just remember - no Stairway, okay?