Do you have a pocket piano?

Ever came up with a beautiful melody on the subway, and didn't have any way to record it? Ever needed to hear that chord progression while doing your theory assignment on the bus?

Those situations are in the past, as now you can have your own pocket piano on your phone. There are great piano apps out there, and if you're a musician, having one of them can really make your life easier. Here are the best ones for pro musicians, out of the twenty listed in this great article.

1. Pianist: this app has 88 keys and you can record and save what you play. 
2. Real Piano: professional sound with no distortion,you can play five notes at once.
3. Piano Sharp: five octaves and you can import and export MIDI files.

Picture from http://www.tvleni.com/pocket-piano-for-symbian-s60v5-edition-virtual-piano-with-an-excellent-sound-on-your-phone.html