Dennis Buck has been accompanist for Michael Amante, Jim Dale, Celeste Holm, Melba Moore, Lee Roy Reams, Christine Andreas, Colleen Dewhurst, Dana Ivey, Patricia Neal, Tony Roberts, Lucie Arnaz, Placido Domingo, Judy Kaye, Bebe Neuwirth, Gena Rowlands,Dr. Joy Brown, Sandy Duncan, Eartha Kitt, Harold Nicholas, Bobby Short, Betty Buckley, Daisy Egan, Patti LaBelle, Jerry Orbach, KT Sullivan, Zoe Caldwell, Tovah Feldshuh, Dorothy Loudon, Mandy Patinkin, Tommy Tune, Dick Cavett, Kitty Carlisle Hart, Mary Martin, Juliet Prowse, Leslie Uggams, Carol Channing, Tammy Grimes, Donna McKechnie, Vanessa Redgrave, Dick Van Dyke, Len Cariou, Gregory Hines, Isaac Mizrahi,  Chita Rivera, Julie Wilson, Natasha Richardson, and Tom Wopat.

BROADWAY (Audition, Rehearsal, Performance Pianist) Broadway Follies, 42nd Street, Damn Yankees, Fosse, Gypsy, How to Succeed…, Jersey Boys, Me and My Girl, My One and Only, Never Gonna Dance, Oh! Brother, Perfectly Frank, Pirate Queen, Radio City Christmas and Easter Shows, The Showgirl Must Go On (Bette Midler in Las Vegas), Spamalot, Will Rogers Follies, also conducted 42nd Street on Broadway.

CONCERTS: Rhapsody in Blue, Rochester and Buffalo Philharmonic Orchestras; Classical/Pops concerts with Atlanta Symphony.

MUSICAL DIRECTION: 150 CDs; All Army Soldier Show (1971-2006).

EDUCATIONAL: Brown University/Trinity Rep (2009-Present), Boston Conservatory of Music (2006-Present), Rutgers University (2003-2004).