Jason Loewenstein (born July 20, 1971) is an American alternative rock singer, songwriter, multi-instrumentalist, producer, and a member of the indie-rock bands Sebadoh, The Fiery Furnaces, and Circle of Buzzards.

[2] His first songwriting contributions came on Sebadoh III and continued on Bubble & Scrape, adding "dark .. rough hewn pop gems" like "Happily Divided" and "Sister".

[7] The album was promoted partly through a unique tour of small DIY house shows throughout the South and the Midwest booked by Jonathan Lee Horne from Joyful Noise Records.

In a Subaru Outback, with a backing band featuring Bob D'Amico and Matthew Friedberger, they performed in living rooms, basements and illegal venues.

From August 2005 to the present, Jason has performed and recorded with the Brooklyn-based band The Fiery Furnaces, playing bass and guitar.