I was in Sardinia some years ago and got up into the mountains - someone else was driving. It may not be the type of singing that you are looking for but we spent some time at a remote farm and were fed roast suckling pig "music bread" and local wine straight from the barrel.

Three guys that I assumed to be local farm workers showed up with a guitar and accordion and sang some great music of the type that I heard from tape sellers in the local market a few days earlier.

I was also persuaded to join the locals dancing, blame the wine.

Great memories, I'm tempted to dig out those tapes.