Agreed - the show tunes go down well. (A lot of the show tunes are actually OLDER than their shows!)

Anything from the 1960s back to the music hall era. The UK song list would be slightly different, of course, and well-known Welsh-language songs (e.g. Sospan Fach)are often requested here in Wales.

Watch out for songs like 'That'll be the day (that I die!)'

My wife always takes a spare mic & lead and gets them to sing along.

Keep the PA volume low.