Brian Wilson was a troubled genius who made so many people happy but had far too much sadness in his life already.

As the Beach Boys sang “house,” the song, “All Summer Long,” didn’t just change chords — in a luscious instant, it ascended to a higher place. Another wave of voices flooded in, but it was the revelation of that chord that was the hook, the spice, the thing that made me melt.

The Beach Boys mastermind has been the subject of pop scholarship and major boxed sets, but some corners of his oeuvre remain unreleased.