I think today's challenge is a bit confusing, to be honest. Am I being asked to pick my favourite song that happens to have been performed by a group, or is just a case of picking your favourite song by a random group?
For the sake of variety I'm going for the latter suggestion. I'm then going to immediately contradict myself by plumping for a jingly-jangly song from the eighties. Step forward Brisbane's finest, The Go-Betweens, with 'Right Here'. If this song and video doesn't raise a smile, I'd suggest you lay off the botox for a while: