Verbs to Nouns　＝ plain form+こと?
 

I would be grateful if someone could help me.

I want to write that someone is good at cooking, singing and playing the accordion. I think I might need to use plain form with こと.

I'm not sure if this is correct but, by my attempt is:

りようりと　うたうと　アコーディオンを　ひくことが 　じょうずです。

No spacing, please.

You cannot say うたうと.　Unlike りょうり, which is a noun, うたう is a verb.　

「りょうりと、うたと、アコーディオンをひくことがじ ょうずです。」 <-- Good and natural.
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If you really want to practice using こと, you may use it thrice.

「りょうりをすることと、うたうことと、アコーディオ ンをひくことがじょうずです」　<-- Correct but wordy.

Thank you for the reply, sorry about the double post everyone; it was purely accidental and have since sent a report to a moderator asking for it to be deleted.

May I ask why うた　instead of うたう. Is this the result of a grammatical change or is うた being used because it means song?

That's because うたがじょうずです already means "(someone) is good at singing" just as りょうりがじょうずです means "(someone) is good at cooking".

うた means both "a song" and "singing".