No 27: Children's TV, definitely 80's, maybe before, maybe after, I dunno.

Do-di di-di-didi do-dowo-do
Do-di do-do-do doo-do
Diddly di-di-didi do-dowo-do
Do-di do-do-do doo-do
Do-di di-di-didi do-dowo-do
Do-di do-do-do do-diddly-do
Dudlo do-didlo-da do-didlo-da
Duh-di-do da-dla-daa
Do-di di-di-didi do-dowo-do
Du-dli-do di-da-dalalala.

I hope this one's easier to guess than it was to type in... I missed out the accompaniment on the grounds of sanity.

Too hard?

Well, I haven't been able to work it out, if that's what you mean.

[rab] Chock-a-block?

OK, I'm going to do another one. Number 28. Children's TV from the 80s. Again! But also a "classical" piece. You can name either, or both for a bonus point. Oh, in the TV theme there was talking over some of this.

dumm dumm
didididi dumm dumm
didididi dumm dumm
didididi dumm da-dumm
dummm, didididi dumm, didididi -
dada-dada-dada-dada-dada-dada-dada-dada
dumm dumm
didididi dumm dumm
didididi dumm dumm
didididi dumm da-dumm
dada-didi dada-didi dada-didi dada-didi
dada-di-da da-da dya-da DAda-dada-dada-dada
DAAA-dada dada-didi
DAAA-dada dada-didi
dada-di-da da-da dya-da DAda-dada-dada-dada
DAAA-dada dada-didi
DAAA-dada dada-didi
dada-di-da da-da dya-da DAAAA
da-da-da daaa dada-dada-dada daaa
da-da-da daaa dada-dada-dada DA-
didadadum didadadum didadadum didada-
DAdadada-dadadada DAdadada-dadadada
DUMMMMMM.... BRUMMMMM.