Wrth fynd efo Deio i Dywyn
This is a singing category for more than one person together, i.e. from a duet up to a small group.
The lively song for this category is classed as ‘Irish’ on this website (https://www.irish-folk-songs.com/wrth-fynd-efo-deio-i-dywyn-lyrics-and-chords.html), but it’s definitely Welsh! You can see the lyrics there in Welsh and English, plus it gives you the guitar chords and basic melody.