I'm posting this link because I'm still learning the most elementry ideas of music and BIAB. This youtube vid showed me how to use a 12/8 time to make a backing track for this song.
Because of my lack of knowledge is the guitarist playing 12/8 or 2-3/4 beats to the bar or what is he doing as related to this discussion Thanks Wyndham
https://www.youtube.com/watch?time_continue=4&v=F0w3xI4A054