Hair, The Musical, Heart and Dagger Productions, Club Café, Boston, through October 20.

No matter the length of your locks, the musical "Hair" continues to resonate. A half century after it first opened Off-Broadway, the acclaimed James Rado-Gerome Ragni-Galt MacDermot-a Tony Award winner in a 2009 revival (its original 1968 opening too late that year for consideration)-still has timely things to say about the legalization of marijuana, the poison that is racism, the great spirit and initiative of the young and the danger of fighting an agenda-based war that threatens their very lives. The actual Rado-Ragni book does not ultimately match the show's strong and tuneful score in intensity and lyricism. Still, to paraphrase drafted hero Claude, "Hair" has 'got life.' Now a high-energy Heart and Dagger Production cast, under the inspired direction of Joey Pelletier, is capturing that life in a richly vital revival at Club Café.

Pelletier, who also serves as the revival's main choreographer, transports audience members to the flower power 1960's in the club's intimate ground floor performance. Cast members move with you-are-there immediacy through aisles as well as in and around theatergoers at small front cabaret tables. Several soloists complement the coziness of the staging by singing and dancing on a small mid-room raised platform. Effective interaction includes such touches as peace activists giving out large colorful flowers and handing out flyers about a be-in to audience members. Assistant director Audrey Seraphin and Pelletier enhance the show's points about evolving views of race and sexuality with vivid screen projections-notably Martin Luther King, Jr. and the Orlando gay club Pulse-- and demonstrate the show's timeliness with images of Trump-particularly with controversial Secretary of Education De Vos.

Above all, cast members seem to bring personal connection to their numbers both in ensemble and individual deliveries. James Sims, who also proves a talented music director, captures Claude's early fervor on the snappy "Manchester, England" and thoughtfulness on the first act-ending "Where Do I Go?" Melissa Barker has the right authority and feistiness in a gender-bending performance as Claude's strong-willed friend Berger. Tamani Jayasinghe-displaying big-voiced vibrancy on such standout numbers as "Good Morning Sunshine"-is a real find as Sheila. Brad Reinking enthusiastically embraces the in-your-face directness of the once envelope-pushing "Sodomy." Other standout sequences include the race-transcending contrast of "Black Boys" and White Boys."

This iconic show still lets in a lot of sunshine about living and loving. For its part, Heart and Dagger lets its glistening tresses down in the glowing revival of "Hair" at Club Café.