A piano on your iPhone – Nano Keyboard Lite Review

This is a simple functional piano keyboard for your phone. You can see a full octave of keys at one time: C-C or A-A, or whatever you might choose. It doesn't have a lot of features or flexibility, but it's fine for picking out notes (or chords) on a piano or organ. The sound is decent, too. And, let's not forget, it's free.
Review by HansG on Nano Keyboard Lite.