Brian Wilson and Sly Stone.
Different musical genres (obviously) but a lot in common:
Their songwriting and musical styles created new paths in music that basically did not exist beforehand; their (Top 40) popularity was only a few years each - but their influence on fellow songwriters and musicians spanned decades.
2 musical giants; 2 troubled geniuses. 2 musical legacies that will live on.
RIP to them both.