Sun Studio is where many artists have gone to cut their first record.  It is an active studio even today.  Many artists such as U2 and others came and record.  One of the most notable things to come out of the studio is Elvis's first single.  The top part is a museum with all the musicians that recorded in the studio or were notable in general.  U2 and BB King made a song in the studio.  Finally, there is a rule that people are not allowed to lick a Microphone that Elvis had touched (people still do).