Won't find him on: Spotify, Apple Music, YouTube
The artist formerly known as the artist formerly known as Prince has certainly never been one to follow convention. Despite being an early Internet advocate, he not only demanded back in 2006 that YouTube remove videos featuring his music, but even started suing his own fans to the tune of $1 million apiece for posting concert footage. This past July, he pulled his entire catalog from Spotify and Apple Music (OK, there is one single on Spotify, a song he did for the movie Happy Feet... not exactly "Purple Rain"). But apparently he thinks Jay Z is so cool, he made everything available exclusively on Hova's troubled subscription service Tidal.
Won't find him on: Spotify, Apple Music, Tidal
A handful of Seger's albums are available on iTunes, but you won't find "Night Moves" or any other hits on major streaming services due to a dispute between his manager and record label over a "new media" licensing-rights deal made many years ago. But it doesn't seem like old Bob cares that much in the first place: he’s not a fan of streaming, or the Internet in general. He doesn't even use email.