SMALL FACES

Phish frontman Trey Anastacio makes a guest appearance on the upcoming album from blues veteran Son Seals on a new version of the latter’s old “Funky Bitch.” The album, “Letting Go,” is due from Telarc on April 25, with Seals set to be the opening act on some Phish concerts. . . .

What did Britney Spears do for her 18th birthday last month? Next time you have a chance, which is often, given her fashion choices, look at her navel--she got it pierced and is now sporting a small, silver ring with a turquoise stone. . . .

Former Luscious Jackson keyboardist Vivian Trimble and ex-Breeders bassist Josephine Wiggs have teamed under the duo name Dusty Trails and signed with Atlantic’s Division One wing. A debut album of lush, layered songs, inspired in part by film score music, is due in May. . . .

One of rock’s great “lost” parodies is finally going to be released. “Stairway to Gilligan’s Island,” in which an act billed as Little Roger & the Goosebumps marries the music of Led Zeppelin’s “Stairway to Heaven” with the words to the classic castaway TV sitcom theme, was quashed back in the late ‘70s by Zep’s management. But Kenny Laguna, who produced it, recently had it played for Zeppers Robert Plant and Jimmy Page, who gave the go-ahead for it to be included on “Laguna Tunes,” a collection of tracks from his producing, arranging and performing vaults due Jan. 25 from Blackheart Records, the label he’s run for 20 years with partner Joan Jett.