That's back when we played vinyl (aka records).
Behind the broadcasting desk was a wall of bookcases of albums.
If you were a smart DJ, then you pulled all your albums ahead of time. If you let your stack run out, and a song was ending, and you had not pulled the next album, yet, then the stress of trying to find the album you needed was thrilling. Alas, if you did not find your next album in time, then there could be dead air.
WE HAD A SECRET WEAPON: Bang a Gong on cart.
See, commercials were recorded on cartridge -- they looked a lot like 8-track tapes.
We had one, and only one, song on cart. If you were running out of time, rather than fail to play anything, you grabbed Bang a Gong, slapped it in a player, and clicked the green-for-go button.
What was funny was hearing other DJs resort to Bang a Gong.
ANYWAY, I'm in trouble. Things are bad. So....