Maximiliano Valdés returns for his 19th year as music director of the Puerto Rico Symphony Orchestra. (www.prso.gov) By PEGGY ANN BLISS Special to The STAR Puerto Rico concertgoers will have the chance of their lives to critique the island’s classical music soloists beginning Saturday with a precedent-shattering parade of local superstars, seven in one concert season. Concerts of viola, clarinet, sopranos, bassoon, violin, harp, and cuatro; members past or present of the Puerto Rico Symphony…
