What is the name of the key with 4 sharps?

E-Major contains four sharps. The scale is comprised of: E, F-sharp, G-sharp, A, B, C-sharp, D-sharp, and E. The key of E-Major is a joyous key, even sometimes described as "joyous laughter." A symphony that uses the key of E-Major is Anton Bruckner's Symphony No. 7.

12-bar blues chorus = a a b