For many years during my radio career, I took pride and pleasure in broadcasting an uninterrupted sequence of spirituals celebrating Martin Luther King Day, and featuring some of the great African-American singers of the early-to-mid 20th century.  Here’s a somewhat briefer playlist of spirituals, featuring four of the immortals profiled in this old NEPR blog post.  Recordings by the first and oldest of the five singers featured in the blog, Harry T. Burleigh, are not available on Spotify; here’s a YouTube featuring his voice:

So, in Dr. King’s honor: