There will be a "session bar" at the Pitlochry Festival Theatre on Sat and Sunday afternoons as a sort of warm up for those appearing at the Open Mic. Last year it was quite a buzzing place.
Of course you can always pop into the Taybank Hotel in Dunkeld as here is usualy something going on. Friday night upstairs is a very good singaround with anything goes. Starts at 9.00pm ish