In 2005, the New York Philharmonic initiated a sister series called Very Young People's Concerts, performed by an ensemble of eight to ten musicians of the Philharmonic at Merkin Concert Hall. Children arrive for musical games played with individual musicians, then sit down for a 30-minute concert featuring a story set to a major piece of music, like one of "The Four Seasons" of Vivaldi, or a portion of Maurice Ravel's String Quartet in F. Children try small string instruments before they leave. The Very Young People's Concerts also sell out on subscription.