The Art of Melodica (Keyboard Harmonica) – Playing like an Acc… "Excellent playing. This is true demo of what this instrument can do. It's ideal to play song with chord progression dominating the music supported by solo tunes. Those who wish to play this versatile instrument and get Accordion effect from the instrument must watch. […]

http://the melodica can play pretty much anything

https://www.youtube.com/playlist?list=PLtyWxGnDvs_uad7RpcDDicfRoBFqAzLHc

Melodica Player Follows Random Cosplayers and Plays Their Characters’ Themes

https://en.wikipedia.org/wiki/Melodica

Bob Marley jamming

Jon Batiste on The Late Show