I never saw one, but (I remember reading in Spin) that the first prerecorded DAT for sale was Wire’s Ideal Copy*.
When I was in college we used DAT in audio production class (either for direct to 2-track, or mixing down from an 8-track Otari), and where I interned in the Dept. of Music they used DAT (and usually no more than 2 mics) to record concerts and recitals. (This was about 29 years ago) They had a 24-track Studer, but I can only remember them firing that up 2 or 3 times during the semester I was there (one of them was to record this).
Bringing it back on topic, that was not long after they opened a Tower in Austin’s old Varsity Theater, famous for its mural. When Slacker came out (in Austin, a year ahead of its general release) there was a scene where a character walks past the mural. By then the Varsity had either closed, or was about to, and the whole audience left out a collective “awwww…” (I haven’t watched in a while but I think that shot was omitted from the general release.) Tower announced it was moving in, and everyone worried what would happen to the mural. Sure enough, scaffolding went up and we got anxious. Fortunately it was just to restore the mural. But, wow, I don’t think it took Tower more than 3 or 4 months to completely gut the inside of that theater, level the floor etc. and move in.
*(Ah! Now I get it!)