Let's face it: Instrumental music is not as popular as it once was. It is no longer the golden age of beautifully composed pieces like those of Mozart. Kanye West was recently called a modern day Mozart if that tells you anything about the current state of the music industry. People love lyrics, and the charts reflect that. Perhaps it's just more fun to sing along.
What's interesting is that, as recently as the 1950s, 60s and 70s, instrumental music was very popular. In fact instrumental songs were popular enough to reach number one on the Billboard Hot 100.
"Theme from a Summer Place" by Percy Faith held the spot for nine weeks in 1960. "Fly, Robin, Fly" by Silver Connection was number one for three weeks in 1975. "Sleepwalk" by Santo and Johnny was on top for two weeks in 1959.
However, no purely instrumental song has held the number one spot since 1985. The top position is now reserved for rap anthems, pop ballads and folk tunes. Electronic music is slowly taking over though and features very few lyrics. Perhaps these bass-dropping songs are the instrumental numbers of today.