8-track tapes typically divided up a two-sided LP into four programs. If the songs could not be split up evenly, a song might be cut in two. First it would fade out; then you’d hear a click that indicated the program change.
[Eight Track Museum proprietor Bucks] Burnett says the dreaded click could be a mood killer, depending on, well, the situation. “Typically, you would — just for two or three seconds — you would stop making out. Wait ‘til the click and then go back at it. It was sort of a ritual.”