Ah, The Marshall Tucker Band. In my estimation, one of the greats of their era. Ever, really. Flute, saxophone, great guitar and bass playing and vocals. Those guys could really play their instruments. I, certainly wouldn’t call them country and hard-core rockers wouldn’t call them rock. Hence, the term Southern Rock. Outlaws (really “twangy”, sometimes) Skynyrd, Molly Hatchet and, of course, the Allman Brothers Band. All somewhere on that spectrum but MTB and the Brothers were in a class of their own.
BTW, how did that twangy sound become to be associated with western/country music. A few notes played that way has me immediately thinking of cowboys and such.