Chris Stamp, The Who Doc, Lambert & Stamp, Opens April 3

Late East Hampton psychotherapist and former manager of legendary rock band The Who, Chris Stamp, is the subject of a new documentary.

Distributed by Sony Classics, Lambert & Stamp tells the story of Stamp and pal Kit Lambert, then-aspiring filmmakers who set out to find a subject for their underground movie, but ended up shaping and managing The Who.

At the time, the unlikely partners from different backgrounds wanted their film to demonstrate the growing youth culture of postwar London and the pervasive feeling of dissatisfaction among their peers. The pair found and focused in on a band called the High Numbers, which had the angst and rebelliousness they were seeking, but they saw something in the musicians—Roger Daltrey, Pete Townshend and John Entwistle—and decided to scrap the project in order to mentor and manage them. Of course, the High Numbers became The Who, which quickly rose to superstardom and a vaunted place in rock ‘n’ roll history.

Stamp, who maintained a private practice in East Hampton and held a special fondness for Sag Harbor, died at age 70 on November 24, 2012. He managed The Who until 1974 and was executive producer of Ken Russell’s 1975 film Tommy, The Who’s rock opera about a young pinball savant. His wife of 33 years Calixte Stamp, a fellow psychotherapist, and three daughters from his previous marriage, as well as six grandchildren, will all be able to see Lambert & Stamp and celebrate his legacy.

Lambert died in 1981.

Directed by James D. Cooper and featuring interviews with Stamp, Daltrey and Townsend, among others, Lambert & Stamp opens in New York and Los Angeles April 3, and will later screen in select theaters across the country.

See the trailer below.