In what year did the artist that released "To Pimp a Butterfly" begin to gain recognition?
Knxwledge:  In 2015, he produced the track "Momma" on Kendrick Lamar's junior release, "To Pimp a Butterfly". Kendrick Lamar:  He began to gain recognition in 2010, after his first retail release, "Overly Dedicated".
2010