Marian has become known for her interpretation of 20^th century opera, performing works such as Menotti’s Amahl and the Night Visitors (Mother), Pasatieri’s La Divina (Cecily), Fox’s Sid the Serpent Who Wanted to Sing (Juggler/Senora/Music Hall Artiste) at the South Shore Conservatory’s Amphitheater (MA), Vaughan Williams’ Riders to the Sea (Woman), and Britten’s Peter Grimes at Tanglewood under the baton of Maestro Seiji Ozawa.  Her performance as the nun Sister Berthe in The Sound of Music with the Reagle Players (opposite John Davidson as Capt. von Trapp) garnered critical acclaim.  Recent roles also include La Suora Zelatrice in Suor Angelica (Opera Providence), Zozo in The Merry Widow (New England Light Opera), Hansel in Hansel and Gretel (Longwood Opera, and the Shepherd in Tosca.  She also appeared in recent Opera Boston productions of Mozart's La Clemenza di Tito and Chabrier's L'Etoile at Boston's historic Majestic Theater, as well as in the world premiere of Garzilli’s Michelangelo with Opera Providence at the Providence Performing Arts Center.  Since 2005, Marian has been a member of Opera To Go, a school outreach ensemble that introduces opera to greater Boston elementary and middle schools through fast-paced interactive and improvisatory shows. 

In oratorio, Marian has appeared as soloist in works such as Mozart’s Requiem, Coronation Mass, and Solemn Vespers di Domenica, Vivaldi's Gloria, Bach’s B Minor Mass, Beethoven’s Mass in C, Haydn’s Lord Nelson Mass, Mendelssohn’s Elijah, Handel's Messiah and Coronation Anthems, and Pergolesi's Stabat Mater with many New England-area organizations, such as the Arlington Philharmonic and Chorus, Chorus pro Musica, Masterworks Chorale, the Salisbury Singers of Worcester, the Concert Singers of Greater Lynn and Orchestra, and the Paul Madore Chorale and Orchestra.

A versatile recitalist praised for her skills as both actress and singer, Ms. Rambelle has performed song repertoire that spans 400 years:  from the Baroque music of Henry Purcell to the Romantic lieder of Clara Schumann and Brahms, and into the present day with the songs of Ives, Argento, and Libby Larsen.

Marian’s appearances also include recordings and nationally-televised broadcasts with Keith Lockhart and the Boston Pops, singing backup for the Andy Williams Christmas Show, and performing at the United Nations headquarters in New York in the worldwide live choral Ode to Joy finale of the 1998 Winter Olympics Opening Ceremonies.  Marian holds degrees from Cornell University (Engineering) and the Longy School of Music (Opera Performance).