Real-time visual acoustic parameter display software has been available commercially for use in singing teaching studios for approximately ten years. While various studies have examined the use of such software in individual voice instruction, its potential use in choral rehearsals has not been widely explored. In this investigation, the authors assessed participant (N=43) perceptions and preferences relative to use of a real-time, visual display of purported spectra during choral rehearsals. For two academic semesters, the authors used the software program VoceVista one day per week in the rehearsals of a women-only (SSAA) chorus of undergraduate music majors and non-majors. A real-time display of acoustic parameters of the choir's sound was projected onto a screen located above or beside the director, so that singers in the choir could see the director and the display simultaneously. Members of the choir were instructed through written materials and through verbal explanations about the display and its potential relationship to singing behaviors. Analysis and display parameters were varied according to the musical works being rehearsed. The authors periodically referred to the display, depending upon the rehearsal needs of the ensemble. Following its final rehearsal each semester, the choir was surveyed to gather preferences and perceptions about the use of the display in rehearsals. Survey responses indicated students thought the use of real-time, visual feedback enhanced their rehearsal experiences. Results were discussed in terms of limitations of the study, practicalities of implementing visual displays in choral rehearsals, and the need for further research.