58-year-old guitarist Mark "Slick" Aguilar has been a member of Bay Area rock institution The Jefferson Starship since 1992, but will soon have to take a break from music as he heads to Florida, where he will get on a waiting list as he prepares for a liver transplant.

The musician recently discovered that he’s been suffering from hepatitis C. Without a liver transplant, his prognosis is not good (doctors have told him he has a 50 percent chance to last two years). Aguilar, who lives in New Jersey, has chosen to go to the Sunshine State on the recommendation of his friend, Grateful Dead bassist Phil Lesh, who underwent a liver transplant himself in 1998, discovered that the wait for a donor organ in Florida is generally much shorter than in most other states.

A number of musical luminaries will congregate for this acoustic benefit concert to raise money for Aguilar's wellness fund Sunday night. In addition to David Crosby, the onetime Byrds member and founder of legendary '60s supergroup Crosby, Stills and Nash, the concert will feature former Jefferson Airplane/Starship vocalist and solo star Marty Balin, the late Janis Joplin's band Big Brother and the Holding Company, local folk-rock institution Country Joe McDonald and more.