The Paul McCartney "Mystery"

at 2:27 in the video you will see Wings' guitarist Jimmy McCulloch (wearing a red top), a fabulous guitarist born in June 1953 in Dumbarton, Scotland. You may not know Jimmy but I will give a link to show him playing in his first big band and the song is from 1969 (i think you may know it). Jimmy was just 15 years and 11 months old in this performance, and the bass player in this video is Pete Townshend. Sadly Jimmy McCulloch died in May 1979 at the tender age of 26, so sad.

https://www.youtube.com/watch?v=qJae3Q2l-BY