Musicians and music lovers who use MIDI technology have a new way to create, control and connect with their instruments. Audiofile Engineering (http://www.audiofile-engineering.com), a developer of audio software for Mac platforms, has released MIDI Surface for iPhone OS.

Designed for use with Line 6's MIDI Mobilizer hardware accessory, MIDI Surface gives iPhone and iPod touch owners the ability to build their own fully customized MIDI control surfaces. Suitable for use on stage, at home or in studio settings, MIDI Surface offers four interface styles, each with its own set of changeable parameters.

The Keyboard interface features Channel and Velocity controls. The Sliders interface includes Channel, Controller (Mod Wheel, Expression, etc.), Low Value and High Value controls. The Drum Pads interface includes Channel, Category (Note On, Controller, Program Change), Note, Note Off (Immediate or Touch Up) and Velocity controls. The X-Y interface supports up to four touches and includes Channel, Controller, Left Value and Right Value controls.

Users can create and save as many MIDI Surface interfaces as they like. Each customized control surface can be configured in detail and adjusted on the fly. Users can even store their ownpresets for quick recall.

MIDI Surface is now available for download via the Apple App Store for US$5.99. Installation on iPhone or iPod touch requires iPhone OS 3.1 or higher. The required Line 6 MIDI Mobilizer accessory is sold separately. More information on the Line 6 MIDI Mobilizer can be found at http://line6.com/midimobilizer.