GamesCom is the largest video game trade show in Europe, and a big source of excitement for gamers all over the world. I found this video from the convention a couple of days ago, with 3 unidentified musicians playing a rocking version of Korobeiniki on iPads.
You'll likely recognize this as the theme for the classic game Tetris.
The community, myself included, begged One Red Dog to reconsider. No other drum machine app offers the same level of functionality; with Audio Paste for sample importing and full Virtual MIDI. It would have been sorely missed if it permanently removed from iTunes.
Developer Peter Johnson listened! Molten it back on iTunes today, with a new update for improving compatibility with other apps in the background.
Yamaha posted an overview video for their NoteStar app, which combines sheet music with audio tracks for practicing popular songs. This is mainly focused on the changes introduced in the 2.0 update a couple of weeks ago, but it is a good overview of the app in general... even if it is super-cheesy and done in the style of a NAMM presentation.
NoteStar is free, but songs range from $0.99, and up to $3.99 for complete band and vocal track.