Copyright 1993 The Chronicle Publishing Co. The San Francisco Chronicle APRIL 13, 1993, TUESDAY, FINAL EDITION SECTION: DAILY DATEBOOK; Pg. D1 LENGTH: 1378 words HEADLINE: NEW SAN FRANCISCO SOUNDS Chris Isaak CD tops list of hot releases BYLINE: Michael Snyder, Chronicle Staff Writer BODY: JELLYFISH -- ''Spilt Milk'' -- Virgin ($15.98 CD, $10.98 cassette) Pop music is no disposable fluff to Andy Sturmer and Roger Manning, the guiding lights behind Jellyfish -- the baroque-and-roll band that embraces harmony over all. Their first album, 1990's ''Bellybutton,'' was chock full of fussy, grand melodies, soari ng vocal harmonies and creative production techniques. This follow-up is more of the same: ornate, heavenly choruses, layers of ringing 12-string guitars, surprising tempo shifts and lots of coy lyrics. Percussionist Sturmer and keyboardist Manning, who multitrack their lush vocals, are assisted on ''Spilt Milk'' by bass-player Tim Smith and session guitarist Lyle Workman. The 'Fish are unabashed about their fave raves and influences. The album opens wi th a harmony-engorged lullaby, ''Hush,'' that recalls two touchstones for the band: Queen and the Beach Boys. On ''The Ghost at Number One,'' Sturmer and Manning conjure up a delicate bridge that could have been lifted from the Beach Boys' ''Pet Sounds'' album. ''Joining a Fan Club'' has a crunching, lumbering rock chorus that sounds inspired by the Move -- the heady British band that spawned Jeff Lynne's Electric Light Orchestra. Bittersweet memories of the late jazz-folk legend Nick Drake are reawakened by the quiet beauty of ''Russian Hill.'' ''All Is Forgiven'' is a howling metallic number with a false ending a la ''I Want You'' by the Beatles. It's a walk down Abbey Road on a tab of Ecstasy. GRAPHIC: PHOTOS (4),Jellyfish, Their second album, 'Spilt Milk,' is a baroque-rock blend of soaring melodies and elaborate harmonies with a sharp edge.