Question: Which band-mate of Joe Perry's co-wrote "Monkey On My Back" and is known as the "Demon of Screamin"?
Related documents: [0]  [DOC] "Monkey on My Back" is a song by American hard rock band Aerosmith. Written by lead singer Steven Tyler and lead guitarist Joe Perry, the song was released on the band's 1989 album "Pump". It was released as a promotional single to rock radio in 1990, where it reached No. 17 on the Mainstream Rock Tracks chart. [END] 
[1]  [DOC] Steven Tyler (born Steven Victor Tallarico; March 26, 1948) is an American singer-songwriter, multi-instrumentalist, and former television music competition judge, best known as the lead singer of the Boston-based rock band Aerosmith, in which he also plays the harmonica, and occasional piano and percussion. He is known as the "Demon of Screamin'" due to his high screams and his wide vocal range. He is also known for his on-stage acrobatics. During his high-energy performances, Tyler usually dresses in bright, colorful outfits with his trademark scarves hanging from his microphone stand. [END] 
Answer: 
Steven Tyler
Steven Tyler