I don't know if this is even Wall of Sound, but Along Comes Mary by The Association is a super interesting song to me. (https://www.youtube.com/watch?v=URUd5RUA

I don't know if this is even Wall of Sound, but Along Comes Mary by The Association is a super interesting song to me. (https://www.youtube.com/watch?v=URUd5RUAz1I https://www.youtube.com/watch?v=URUd5RUAz1I) It starts with a guitar and a keyboard (panned all the way left and right) plus bass guitar, drums, claps, and vocals. Pretty standard so far. Then we get to the first chorus which introduces brass, cowbell, and vocal harmonies. Right after that, a lower brass comes in which doubles the bass. Later we meet the flute, and then during the final verse the vocal harmonies get more intense. The result sounds huge to me, but each part can be distinctly heard (which is why I'm not sure if this qualifies as "wall of sound"). As if the production weren't enough, the composition is also brilliant. It's catchy and poppy, yet it has some very strange chord progressions and interesting harmonies. The genre is apparently "sunshine pop" but I haven't been able to find any other songs in that genre that I like even half as much.