Joshua Keith Ostrander[3] (born April 8),[4] also known as Mondo Cozmo, is an American singer-songwriter and record producer from Philadelphia, Pennsylvania.

Ostrander later became the front man of Eastern Conference Champions (ECC), which he started with his friend and collaborator Greg Lyons from Laguardia and Vern Zaborowski from CKY.

The band came about when Ostrander and Lyons signed with Geffen Records and released the EP called The Southampton Collection under the ECC moniker.

Three studio albums followed: Ameritown in 2007, Santa Fe in 2009 and SPEAK-AHH in 2010, and a number of EPs as Eastern Conference Champions.

Ostrander's debut headlining tour as Mondo Cozmo began on July 12, 2017 at the Exit/In in Nashville, Tennessee.