Question: who sings you can't get what you want?
Answer: the Rolling Stones

"You Can't Always Get What You Want" is a song by the Rolling Stones on their 1969 album Let It Bleed.  Written by Mick Jagger and Keith Richards, it was named as the 100th greatest song of all time by Rolling Stone magazine in its 2004 list of the "500 Greatest Songs of All Time".