MIDI and Auduino

Hi sorry for croos posting i've found something but it was an old topic which also closed....

so I started a new conversation here..

I'm wondering how to hook up a midi in for synch the frequency and also the delay.... maybe giving midi control in and out to the pots...

maybe somenone of you could help me or show me his project

Now i'm training to build an Audino following this guide

but i think i will use this code...

i want to modify the code and adding also the LDR part of the project before....

any suggestions?