Conversation so far:
What's the biggest thing that happened with Pharrell Williams?
How long did Pharrell Williams appear on The Voice?
Pharrell Williams appeared in American singing competition, The Voice during the 2014 and 2015 seasons.
Who did Pharrell Williams work with on The Voice?
On March 31, 2014, Williams was announced as a new coach for the seventh season of The Voice working with multiple contestants.

Question: did he do anything else?
Self-contained rewrite: Did Pharrell Williams do anything else on The Voice besides coach for the seventh season?