44 years ago, Brian Wilson was due to deliver his masterpiece, his follow-up to the phenomenal Pet Sounds, and the album that would blow Sgt Pepper out of the water. But instead, SMiLE became the straw that broke the camel’s back for Wilson and the Beach Boys, sending both into freefall. It had been a hugely ambitious album and one that deeply divided the band while it was being recorded, not that you’d know that from some of their more recent comments about it.