My Dad was a bit of a music lover, with early Beatles and, later on Manfred Mann singles being brought home (he's 96 now, so some might have thought he was a bit old for "that sort of thing" at the time!). My maternal grandparents bought me a classical guitar when I was about 13 which, I'll admit, I didn't make the best use of. My fault, though my teacher was not ideal. My uncle played keyboards in a sort of showband which played around South Dorset in the mid to late 70s and later actually ran a music shop until the web kicked in.
A number of things which, cumulatively created an environment with hindsight.