Founded in 1938 by the pianist and impresario Aaron Richmond, the Celebrity Series of Boston is one of the nation's largest and most highly regarded organizations presenting performing arts. With a reputation for artistic excellence and innovative curation honed over the decades, the Celebrity Series now offers more than 65 main-stage performances at eight to ten venues and more than 150 community- engagement activities annually. Ticket prices range from $50 to $125.You decide how to spend the $300. And the gift certificate has no expiration date.