Notion is an iPad app for music notation. One outstanding feature of Notion is that it gives you the ability to edit and playback scores using real audio samples performed by The London Symphony Orchestra recorded at Abbey Road Studios.

Here is a cheezy marketing blurb complete with bad movie music.

This is how you enter the notes.

It’s currently priced at $14.99. Add all In-App purchases – samples – for $29.99.

Warning: it’s big. The initial download size is over a gigabyte.

 

Price $14.99
Size 1.2 GB
In-App Purchases $29.99
Developer Product Page