I’m thinking they were mostly Westron,
Samwise. Lovely classical folk songs they were, but more of the type you would hear in the streets of Minas Tirith than on an evening at the Golden Perch. Very well done. A very few were elvish of some sort, I would guess Sindarin. But then, begging your pardon, I’m no scholar to tell you aright! And again a couple as would fit the Shire just fine.