I like to try to visualize background vocals as a “bandshell” behind the leader…
Derived from using audio to explore deep below the earth’s surface
The Steely Dan cut can make any old sound system sound OK, which is why it is used by so many loudspeaker manufacturers for client presentations. The Jackson cut has a lot of snap in the LF – also useful for generating good feelings about the performance of a sound system. Reference discs reveal system performance.
Note that this article was first published in 2003 in Live Sound magazine.