Is there a way to use Core MIDI on pre iOS 4.2 devices?

Say, I build my app using iphoneos4.2 as the 开发者_如何学GoBase SDK. Will the Core MIDI part work on older devices? I suppose not, but is there a way to make it work?

Because CoreMIDI was only introduced in 4.2, older versions of the OS don't contain the framework and so cannot use it. You could use something like DSMidiWiFi as a substitute.