Did Mastodon form before Bear Hands?
Bear Hands:  Hailing from Brooklyn, New York, United States, and formed in 2006, the band signed with Cantora Records in 2010 upon the release of its single, "What a Drag". Mastodon (band):  Formed in 2000, the group is composed of bassist Troy Sanders, guitarists Brent Hinds and Bill Kelliher, and drummer Brann Dailor, all of whom perform vocals in studio (except Bill Kelliher).
yes