TWO of the hottest bands on Hong Kong's underground scene are joining forces in The Wanch tonight for an outrageous double-bill that is sure to be the indie gig of the year. Describing themselves as ''the two best bands in the world'', the Sisters of Sharon and the PNS will be getting into the festive spirit with an outrageous mix of Christmas costumes and theatrics. Anything can happen with these madcap musicians so be there from 10pm for an evening of X'mas grunge. Tonight: Blues legend Clarence ''Gatemouth'' Brown continues his run at the Jazz Club, from 9.30pm, and Acappella band The Doo-Wops are at the Fringe Club bar from 9pm. The Rikks' Band will be playing classic soul, motown, pop and rock from 10pm in LA. Cafe and Judgement A.D. is featuring house band Max Tempo, from 10.30pm. Dave Colquhoun will be playing unplugged rock and blues at Mad Dogs Kowloon, at 6pm before crossing over to Mad Dogs Central, at 10pm. Soul Liberation can be heard at Hot Shot from 9.30pm. Tomorrow: It's a triple header at The Wanch, first up will be Ritchie Weintraub taking a break from his high decibel antics with AWOL by going unplugged at 7pm before handing the mike over to May Ip and her new band Instant Moonshine at 10pm. They will be followed by blues band The Barristers around 11.30pm. Fresh from their Lamma Island beach bop last week, psychedelic funk band Mothership will be grooving at club IT at 10.30pm. Clarence ''Gatemouth'' Brown at the Jazz Club at 9.30pm followed by DJ Mickey Smith's Land Of The Hipster at 1am, admission $50. The Rock Gang will be playing hard-rock and heavy metal at the Amoeba from 10pm. Sunday: Clarence ''Gatemouth'' Brown's final show at the Jazz Club from 9.30pm. Don't miss it. Monday: The New China Blues Agency at the Cyrano Bar of the Island Shangri-La from 9.30pm. Tuesday: Dave Colquhoun at Mad Dogs Kowloon, at 9pm. Wednesday: A benefit concert to raise funds for India's flood victims is being staged at the Queen Elizabeth Stadium, Wan Chai, from 7:45pm. Entitled Down Melody Lane, the concert features the music and songs of Indian films. Topping the bill is India's current film favourite, Juhi Chawla. Tickets from $150 to $750. Reservations on 366 2391. Radio Free Hong Kong at Hot Shot from 9.30 pm. Music Of This Century at the Fringe Club, featuring a piano solo by Otto Chau and Lai Wing-yan from 6.30pm. Jazz trio, Han Shan, at Amoeba. Classic pop and rock with Bambi and The Bambinos at The Wanch, from 9pm. Dave Colquhoun at Mad Dogs Central. The Victoria Jazz Band is back at the Jazz Club from 9.30pm. Thursday: It's Another Musical Affair with Teresa Norton at the Grand Hyatt's Champagne Bar from 10pm. Eugene Pao's rhythm and blues band will hit the Jazz Club from 9.30pm. Plus: The Wanch's resident guitar man, Sammy, takes to the stage on Sunday through Wednesday from 9pm with his mix of rock, folk and country music. Music Lights playing rhythm and blues at the Cyrano Bar, Island Shangri-La, from 9pm. Playing barfly favourites is Benjamin Jacinto at the Island Shangri-La Lobby Lounge from 7pm from Monday to Saturday. Edwin Gutierrez keeps the stool warm on Sunday. Helping diners' digestion will be Singer Remedios and Samson on keyboard, performing popular tunes at the Island Shangri-La Lobster Bar from 7pm. Organising a show? Please send information to Live Music, Features Desk, PO Box 47, or fax 8111048.