v\concert(i«* Music by American composers salutes the Bicentennial when Lawrence Christianson conducts the Riverside Symphony Orchestra in the traditional ;*‘Ppps Concert” which opens ;the 1976-77 season Saturday ;evening Oct. 23 at 8 p.m. in ;the Municipal Auditorium, - ‘Seventh at Lemon.C Christina Petrowska, '.young Canadian pianist and Specialist in American and ‘pohtemporary music, will .play Gershwin’s ever-popular I jRKapsody in Blue. Now in herImid-twenties, she has earned_ + wthe critical acclaim usually{{reserved for veterans of the Concert stage. Leopold!-Stokowski has praised her “iresh, imaginative approach to music,” Ms. {Petrowska holds both Bachelor’s and Master’s degrees from The Juilliard School and is completing a '.doctoral dissertation on the 'work of Pierre Boulez under a -French Government grant at ;the Sorbonne. She is also an accomplished graphic artist jan,d has published a volumeofpoetry.Christina Petrowska ^debuted at Town Hall in New {York at the age of fifteen and {has appeared throughout North America and Europe in [solo recitals, as a soloist with ;orchestra, and on radio and •television for the CBC (Canada) and ORTF (France). The Montreal Star rjwrote of her, ”...Extraordinary control... con-Jfi4ent precision... We are^bdund toThear moreofthis{gifted musician.”' interviewed at second frehearsal,, Lawrence {Christianson stated, “The |most unusual work to be {performed at the. Pops : Concert is The Unbegun {Symphony by Peter ‘ Schickele. You see, it has only Third and Fourth Movements!”' 'If you aren’t familiar withcontinued the conductor.“Absolutely none of which are original,” inserted the manager.Christianson smiled, nodded, and amplified, “For instance, all four themes of Tchaikovsky’s Sixth are played at one time, and it sounds great. Other melodies are freely taken from music by Mozart, Brahms Berlioz. You’ll even recognizeBeautiful Dreamer and Ta-!rah-rah-boom-de-ay. But Schickele is a first-rate music scholar-very funny-very clever.”As is usual in the performances of the satirical musical jokes attributed to P.D.Q. Bach, the orchestra is planning some humorous antics which both musicians and audience are sure toIenjoy.Other numbers to be performed include Morton Gould’s American Salute, Samuel Barber’s Adagio for Strings, Wallingford Riegger’s Dance Rhythms, Sousa’s Semper Fiedlis, and Grofe’s Grand Canyon Suite, eighth in popularity in a poll of thirty classical and modern works taken by the Honolulu Symphony when it celebrated its 75th anniversary in March. Tickets to the Pops Concert, priced at $4 (general admission) and $2.50 (students and senior citizens) may be purchased at Harris’ (Riverside and San Bernardino), Cheney’s (both stores), UCR, and at the door. ~Aiimitednumberofreserved tickets at $5 will be sold at the box office immediately before the concert. Season tickets for the five concerts (Oct. 23, Dec. 5, Jan. 30, March 19, April 16-the first, fourth, and fifth on Saturday evenings; the second and third, Sunday, afternoons at 3:00) are still available at.$25 (reserved), $16 (general admission), and $10 (studentsjtlt;r£1';Schickel he's the discoverer—and seniors)-by-sending-your: of P.D.Q. Bach,” interjected check to Riverside Sym-^Edward Ciinkscaie, orchestra manager, and added*With a grin, “You know, he’s vtfyj one who was born in 1807 iaiid .died in 1750! ”I “There are no less thanthirty-three melodies,”phony, P.O. Box 1601, Riverside 92507. Please enclose a sell-addressed stamped envelope. Tickets ordered less than ope week before the 'performance will be held at the box offiqe.