Far as band music, you are right. Back in the 70's I experienced
'college band' jazz not really knowing what it was at the time.

College Band was supported in the professional community by the
likes of Stan Kenton as a way to raise a new generation in
the music. The college style then-- the sort written by
Holman, Russell, Dee Barton and the whole school of music that
came out of the North Texas State Jazz Lab Band and it's imitators
was a specific movement that took hold in the 70's according the
extensive liner notes on a collected cd set of Holman and Russo
arrangements for the Kenton orchestra.

It was classically influenced rather than being dance music,
though Ellington-- once you get past chestnuts like Take The A Train
find the concert Ellington, who even wrote a piece on the spot
for the University Of Wisconsin. Ellington was prodigious and his
serious work of religious, Far East, and other themed suites. These are concert works. Artie Shaw moved into this area as well I believe.

Far as Guy Lombardo and Lawrence Welk, Garrison Keillor has taken over
that slot on the radio for the next generation of old farts who want
to slide into some nice _soft_ entertainment.