Recording and storing Midi data with arduino and midi shield i need help getting started on writing a sketch that would let me record and store midi data from a midi controller connected to a arduino mega through a midi shield. are there any functions in the midi library that will aid in this task?
The Arduino MIDI Library allows you to read and write MIDI messages, but only in real time.

Storing MIDI data makes sense only with timestamps, so you have to call millis() or micros() when you receive a message.

How to actually store the data is something that you have to design yourself; which data structure to use depends on what you want to do with the data later.