Apple:

Sometimes the best ideas come when you least expect them. When those moments happen, open Music Memos to record high-quality, uncompressed audio through the built-in mic in your iPhone, or connect an external microphone. Music Memos is optimized for acoustic guitar and piano, and it works with other musical instruments, too.

I enjoyed Jim Dalrymple’s take on the app:

This is just a really smart app. It answers a lot of the problems musicians have had over the years in recording ideas quickly and easily, but it took that 100 steps further.

I’m really excited about Music Memos.

He also discusses some of the new features in GarageBand 2.1. It’s an interesting read, even if you’ve never made music before.