Rubuta ci gaba ga wannan sakin layi - Mafi mahimmanci, Galloway shi ne mai kula da ma'aikata na 1904 na Louisiana Purchase Exposition
a St. Louis, inda ya fara babban sashin a cikin Gidan Bikin (yanzu an kiyaye shi a matsayin kwayar sashin Wanamaker a Macy's Center City a Philadelphia) wanda shine mafi girma a duniya a wancan lokacin. Kodayake ya hada da yawa a matsayin matashi, Galloway daga baya ya yarda a cikin wasika zuwa W.H. Pommer, "Ba zan iya gaskanta cewa an yi nufin Charles Galloway ya hada ba". Ya kuma yi aiki a matsayin mai gudanar da ƙungiyoyin mawaƙa na maza da mata masu daraja a yankin St. Louis: Apollo Club na St. Louis da Morning Choral Club, bi da bi. A matsayin malami, Galloway ya koyar a cibiyoyi daban-daban, gami da Strassberger Conservatories of Music, Jami'ar Washington, da Kwalejin Lindenwood.) Bugu da ƙari, yana da ɗalibai masu yawa masu zaman kansu, da yawa daga cikinsu sun zama mawaƙa na coci da malamai.