Here is Yvonne Daniels on urban-contemporary WGCI, Chicago, on November 25, 1988. Yvonne Daniels was an African-American broadcast pioneer and known as “The First Lady of Chicago Radio”. She was the first female disc-jockey at WLS when she started there in 1973. She passed away on June 21, 1991, and was inducted into the Radio Hall of Fame in 1995.
When the music stops  it means commercials, and lots of them. This station was out of music for 6:50, played one (long) song and was out of music for another 4:30, though some of that was news with Wanda Wells. Note that 12 minutes of commercial content in an hour isn’t unusual, but this station was leading the pack with long, long, commercial sets. There is reverb, but on Yvonne’s mic only!