SEATTLE CHAMBER MUSIC FESTIVAL--Highlights for this busy week: On Friday an early Mendelssohn Quartet and Shostakovich's Sonata for Violin and Piano, plus a premiere from festival pianist Adam Neiman. Saturday is the "Monika Clowes Memorial Emerging Artist Concert," presumably for violinist Shunsuke Sato, who performs in Leclair and Saint-Saëns sonatas and a Mendelssohn Trio. Monday is sold out, so go sit on the lawn; it's worth it for Messiaen's Quartet for the End of Time, and you get Mozart and Brahms Piano Quartets thrown in. Wednesday has also already sold out, I'm guessing due to (yet again) Mendelssohn's String Quartet Op. 44, No. 2 and Schumann's Piano Quintet rather than Prokofiev's Sonata for Two Violins and Persichetti's lovely Serenade No. 10. Don't forget that the pre-concert recitals are free and that they're held in a different space than the main show. Lakeside School, 14050 First Ave NE, Fri July 16, Sat July 17, Mon July 19, and Wed July 21, 7/8 pm, $25/$30, 283-8808.

LAKE UNION CIVIC ORCHESTRA--Get a group of scientists together and they're bound to form a music organization before long; this one's an off-shoot of the Fred Hutchinson Cancer Research Center. It features a Mozart Sinfonia Concertante for Winds, Kodaly's Summer Evening, Vaughan Williams Serenade to Music, and Tchaikovsky's Romeo and Juliet Overture. I'll always prefer Prokofiev's Shakespeare, and Vaughan Williams when he was angry, but this is a perfectly pleasant, hummable collection of tunes. Shorecrest Performing Arts Center, 15343 25th Ave NE, Sat July 17, 7:30 pm, $5, children under 12 free, pay at the door.