iPhone Music Apps

I downloaded a bunch of games and music apps to my iPhone for my Thanksgiving flight home from JFK to LAX. Quick thoughts:

MiniPiano
14-note piano keyboard from C to C#. Fun to play. Sometimes too easy to hit wrong notes, especially black keys. Can play chords, but it's awkward. Came up with a couple new riffs. Can play swirly circular lines by holding your fingers down and moving them around Stylophone-style. Record feature would be a good addition. Price: Free. Get it.

Tap That
BPM detector. Tap the screen and get the tempo. Useful and works. Price: Free. Get it.

Metronome-iTick
Metronome. Tempo range: 40-250 BPM. Time signatures: 1/4, 2/4, 3/4, 4/4, 3/8, 6/8. Variety of sounds selectable for upbeat and downbeat. Handy. Price: Free. Get it.

iBanjo
Choose one of three banjos to play "Deuling Banjos," "The Entertainer," or "Banjo Pickin'." Press three rectangles to hear the pre-recorded banjo riffs. Stupid but worth a couple minutes. Price: Free. Get it, then forget it.

DigiDrummer
Drum machine with 8 pads. Variety of classic, "realistic," and cheesy drum machines. Fatty Thumbs skin option enlarges and squares off the drum pads, looks cooler and easier to play. Latency can be an issue. Records and saves your playing but no click to play to. Doesn't loop playback where you want it to. Step sequencer would be a great addition. Price: $0.99. Get it. There's also a free Lite edition. Haven't tried it.

It's too bad you can't use the iPhone music apps simultaneously. I wanted to tap a beat in DigiDrummer, then play the MiniPiano on top and record. No can do.

iMonalisa
Turns pictures into sound. Snaps a photo and scans image from top to bottom and plays audio that sounds like a synth oscillator/noise based on the image. Cool idea but more options in the sounds would be good. Price: Free. Get it.

Apparently there an OS X Audio Units plug-in version of iMonalisa. Need to look into that.

Bloom
Generative ambient music app by Brian Eno and Peter Chilvers. Tap notes and they echo out. Can select from or shuffle nine different "moods." Or just sit back and let it play and evolve on its own. Very cool. Price: $3.99. Get it.

Oblique Strategies
iPhone version of the creativity-inspiring series of cards introduced by Brian Eno and Peter Schmidt in 1975. Price: Free. Got writer's block? Get it.

Nine Inch Nails Revenge
NIN version of the Guitar Hero-style Tap Tap Revenge game. Features 13 songs from The Slip and Ghosts hand picked by Trent Reznor. Fun game. Go nuts tapping fast on the hard levels. Couldn't figure out what to do with the arrows until I looked it up. Way better than the awful songs included in the original free Tap Tap Revenge game. Price: $4.99. Get it.

Karajan Beginner Music & Ear Trainer
Super cool music and ear training app. Quiz yourself on musical intervals, chords, scales, pitch, tempo, and key signatures. Don't forget to turn the phone sideways. Price: Free. Get it. There's also a $14.99 full version with more levels.

There are over 300 iPhone/iPod Touch music apps available at the App Store. So many apps I haven't checked out yet... theremins, ocarinas, kalimbas, maracas, xylophones, X-Y MIDI controllers...

What are your favorite iPhone music apps?