His music has been performed widely, including festivals at the University of Kentucky, Indiana State University, UNC-Greensboro and the University of Nebraska at Kearney, festivals and conferences of GEMDays (UK), #9 Art (Brazil), Di_Stanze (Italy), Electric LaTex, University of Texas-EARS Series, Electronic Music Midwest, Electroacoustic Barn Dance, NYCEMF, Studio 300, ICMC, SEAMUS, Society of Composers Inc., the College Music Society, the National Flute Association, the North American Saxophone Alliance, and many more. Dempster is a recipient of honours and citations from BMI, ASCAP, Sigma Alpha Iota, Ithaca College, Black House Collective, Vox Novus and the Columbia (SC) Museum of Art. He has received commissions from the Greenbrook Ensemble, the Blue Mountain Ensemble, the Governor’s School of North Carolina, the Ohio State University New Music Ensemble, South Carolina State University and others.