It’s time for another edition of Tech Trumpet.

This week, I have been mostly playing with “Bloom” for the iPhone. Developed by Brian Eno and Peter Chilvers, the application offers an audio-visual experience simply by touching the screen or letting the instrument play itself.

“Bloom is an endless music machine, a music box for the 21st century. You can play it , and you can watch it play itself,” says Eno…