It is not a cylinder, it is a flat disk that rotates by means of a turntable device and plays music from vibrations the needle picks up following the set grooves in the disk.
Revolver was an okay album.
"Revolver was an okay album."
Also doubles as a Frisbee(TM) which neither rotates nor revolves but is sometimes described as a "gyroscopically stabilized disk," so I guess it gyrates, but not like this one girl I knew but I can't get into that right now.
Actually, there's only *one* groove on an LP. Think about it...