Women in Musical Theatre. Jillian Willems, accomplished singer, dancer, actor, explores the wide range of vocal styles of women in musical theatre. Accompanied by fabulous pianist, Paul De Gurse, Jillian will bring to the Music ‘N’ Mavens stage, Barbra Streisand, Patti Lupone, and other remarkable women from the golden age of Rodgers and Hammerstein to contemporary musicals.