One broadcasting catchy tunes – they have loads they can take up (8)

'one broadcasting catchy tunes they have loads they' is the definition.
I know nothing about this answer so I can't tell whether it can be defined by this definition.

'take up' is the wordplay.
I cannot quite see how this works, but
'take' could be 'hook' (hooking is a kind of taking) and 'hook' is found within the answer.
The remaining letters 'skys' is a valid word which might be clued in a way I don't understand.
This explanation may well be incorrect...

'can' acts as a link.

Can you help me to learn more?