Jeff Sipe (born January 31, 1959), also known as Apt.

He is a founding member of Aquarium Rescue Unit with Bruce Hampton.

He was a member of Leftover Salmon and the Zambiland Orchestra, an experimental big band with members of Phish and Widespread Panic.

[1] He has toured with Trey Anastasio, Jeff Coffin, Jimmy Herring, Warren Haynes, Keller Williams, John McLaughlin, and guitarist Shawn Lane.

[2] With Aquarium Rescue Unit As member With Jeff Coffin With Jonas Hellborg With Susan Tedeschi With Keller Williams With others