In order to increase page load times, we have condensed all of the excerpt information into the following pdf: 

Due to limited funds, all of the material is from the public domain or author-composed. While this limited our ability to feature diverse composers, approximately 10% of the excerpts are from women and 10% of the excerpts are from BIPOC composers. Most of these excerpts were found via the following websites: 

If you are aware of any other repositories of works by diverse composers in the public domain, please email us so we can enrich our selection.​

In order to provide accompanied exercises, we have created reduced accompaniments and analyses for many of the excerpts in the following pdf:

Many of the excerpts have associated recordings to reinforce the harmonic support and encourage singing at performance tempo. Due to site restrictions, these recordings are not available on mobile devices.