Currently, the New York Philharmonic presents four Young People's Concerts each season, in addition to concerts on tour, most recently in Hong Kong on February 17, 2008. In New York, Delta David Gier is conductor and host—the first person to lead all such concerts in a season since 1952. Each season is themed as a unit—for instance the four ages of music—and the live performance is complemented by live images projected on a large screen, in addition to actors, dancers, and singers who help bring themes to life. Noted playwright Tom Dulack scripts the concerts. Each concert is preceded by Kidzone Live, an interactive music fair engaging over 1000 children in the themes of the concert with hands-on activities on all four level of the lobby of Avery Fisher Hall.