In the 80s
comedy programs had a pitiful budget compared to 'light entertainment', consequently the producers soon realised that by shoehorning a musical number into the show, they would then become eligible for a considerably higher Light Entertainment show budget. Hence Elaine Paige's weekly slot on the Two Ronnies and Madness (and others) on The Young Ones.

Edit: Or did you mean such as the two Ronnies, where they'd come on at the end dressed as dinner ladies or in a marching band? I used to like those songs, laced with enough innuendo to floor a rhino.
( sandettie light vessel automatic New Twitter - @bollocksreally, Sun 2 Jan 2011, 0:44, 1 reply)

The songs at the end is what I mean
Like I say, some of them are real gems, and I'd probably count a couple of the Ronnies' amongst them, but generally they were dross...I was kind of hoping they'd die out.
( emvee cruor deo cruoris, Sun 2 Jan 2011, 1:04, closed)