Koch Marshall Trio is a three piece band which formed in 2017 in Wauwatosa, Wisconsin.

The guitar player is Greg Koch who grew up in the Milwaukee area of Wisconsin.

The B3 organ player is Toby Lee Marshall, from Minneapolis, Minnesota.

The Koch Marshall Trio has signed a contract with the Mascot Label Group.

They released their debut studio album on February 23, 2018 (Title: Toby Arrives) under the Mascot Label Group[4][5] The Koch Marshall Trio's debut album Toby Arrives contains songs that, "morph into an amazing new relationship with organ influenced Blues Rock.