As a soprano performer, Dr. Hickman has enjoyed a singing career in Europe and the United States. She toured in an AIDS benefit concert performing in Amsterdam, Cologne, and Berlin garnering rave reviews. Other European engagements include performances at Amerikahaus and Johann Goethe Universität in Frankfurt, and a concert tour in Austria including Haag, Vienna, Bad Ischel, and Linz. Highlights of her U.S. performances include the Delius Society, National Association of Teachers in Singing, Shreveport Opera, Opera Festival of New Jersey, TCNJ Opera Theater, International Congress of Voice, National Federation of Music Clubs, and many community concert associations. Dr. Hickman traveled to Madrid to be a featured soloist for the College Music Society’s International Convention in 2006.