May 27 TRIBUNE PHOTO: L.E. BASKOW Portland resident Thomas Brown picked up bucket drums about seven years ago, and his street playing the past two years has helped support his family while he has worked to be a licensed plumber. He appeared in "Cirque Dreams Illumination" at the Keller Auditorium after winning an audition. Since then: Brown still beats the buckets on the streets, and he has landed gigs at Nike and elsewhere while also working toward his career as a plumber.