Bus services to Ischgl from Munich

For amny years now I have been travelling to ISCHGL to see the end of the season concerts ie Sting, BON JOVI, ROD STEWART etc etc etc
It does take 3 hours to get there by car, skii around abit see the concert and get back - its a long day.
I was thinking that maybe a bus companey is doing a trip there, I have tried sarching the internet, but I have not found anything.

Does anybody know if this service is provided, or do I just have to drive again !!!

Don't know of a coach service from Munich, but you can Get the train to Landeck and then catch the Postbus to Ischgl