Blake Preston Harnage is an American songwriter, music producer, multi-instrumentalist and composer. He has written, produced, engineered, mixed or performed on songs for Versa, PVRIS, Hands Like Houses, All Time Low, With Beating Hearts, and others.

Versa was an American rock duo formed in Port St. Lucie, Florida, in 2006, as VersaEmerge. The group consisted of Blake Harnage and Sierra Kay. They had a revolving line-up, their most prolific being with bassist Devin Ingelido, who was a member from 2007 until 2011.