I have the new command advanced drum module. Musicians have sent me MP3 file of song without drums. I have played along from my Ipad to learn and create drum part. now I need to record the MP3 song that they sent, and my drum part together. the music is complicated and I have been using the "graph" bars along the bottom of ipad screen to show me timing and stops- kinda still need that when I record this symphony.- Any help would be appreciated. This module and mesh head kit are the best !