TODAY: July 5 1954. During a break Elvis Presley noodles around a tune he likes, That's Alright by Arthur Crudup.

He picks up the pace and changes the words to suit the wilder mood he's started. Bill Black gets his bass and Scotty Moore picks his Gibson up again and they go for it. In the pause after the last chord smashes down Sam Phillips at the console says: Ok, boys, do that again and we'll record it.