Fifth Dimension. The Fifth Dimension made it big by stealing all of Laura Nyro's songs. Laura's singing oldies with Patti and the Bluebelles, so there aren't any more songs to steal. The Dimension's been keeping a low profile, ever since "One Less Bell to Answer" but I figure the middle of the road is due for a boost. Besides, my mom likes them as much as she likes Sly.

Beach Boys. I just finished reading a long rap in Outlaw Blues between Paul Williams and David Anderle about what a genius Brian Wilson is was. I guess so. I liked the surfing and car music, but "Surf's Up" hit me like a three footer coming in to Virginia Beach. What ever happened to "Smile?"

MUSIC HALL: Fifth Dimension, Sun., Nov.19, 7 and 9:30. Tickets $4.50, $6.50. Beach Boys, Sat., Nov.18, 7:30 and 10:30. Tickets: $4.50, $6.50.

CURRIER HOUSE SENIOR COMMON ROOM: Patricia Kopec and Jay Gottlieb perfrom music for viola and piano, viola solo, and piano solo by Milhaud, Fuchs, Debussy, Rachmaninoff, Copland, Liszt, Brahms, Sat. 8:30 p.m.

DUNSTER HOUSE: Katherine Flanders '73, Stanley Gerson '73, Jo Ann Poole, Helder Rian '71, and Lois Siegeiboum perform Boismortier's Concertos for five flutes and Bach's Duets for two flutes, Sun., 3 p.m.

HOLMES HALL: Violinist Pierre d'Archambeau and Pianist Kate Froskin, tonight, 8 p.m.

LOWELL HOUSE JUNIOR COMMON ROOM: Daniel McCrimons performs Bach, Chopin and Schumann, Sun., 2 p.m.

MATHER HOUSE DINING ROOM: Hunni Myers, soprano, Myron Press, piano, and William Lipscomb, clarinet present a recital of songs by Schubert, Faure. Falla and Moussorgsky. Sun., 3 p.m.

WINTHROP HOUSE DINING ROOM: The Larry Carsman Blues Band and The Allston Allstar Band in a Blues Concert, Fri. 8 p.m., $1.

MIT CHAPEL: Epp-Karike Souin and Sandra Stuart sing duets for sopranos, today, noon.

ST. PAUL'S CHURCH: Harvard-Radcliffe Chorus, Sun., 8 p.m., $1.50.

SANDERS THEATER: Bach Society Orchestra, performs Bach, Mozart, and Schubert at midnight, Sat., $1.50.