PBT’s season finale celebrates the 100th birthdays of Jerome Robbins and Leonard Bernstein, whose game-changing Broadway collaboration remains as relevant today as it was in 1957. “West Side Story Suite” samples classic songs and dances from the full-length musical and film. In this work, the dancers not only dance – they’ll sing excerpts from famous songs like America and Cool. Tapping into the raw emotions that drove the full-length story, the dancers will take on the personas of Tony, Maria and the rival Jets and Sharks through choreography that earned Robbins a Tony Award. “West Side Story Suite” will share the program with another Robbins masterwork: his intimate 1940 work, “In the Night,” set to four Chopin nocturnes. With pas de deux for three very different couples, “In the Night” lifts the curtain on love at its most tender and its most tumultuous.