Queen

Personally, for sentimental value, there's music, and above all, there are Queen. One of the Rock bands that has experimented with its various sub-genres while always remaining impeccable, even touching on some Heavy Metal in '77. Freddie Mercury was one of the most important voices in history and a great musician and songwriter, just like Roger, Brian, and John. I highly recommend listening to their entire discography: there are some hidden gems that no one ever talks about.