All the playlists for the Folk At Five shows on Mondays to Saturdays daily, and the Teatime With Trevox shows every Friday, are published online at www.trevox.uk. The top-level music genres are quite broad: "World" and "Folk" for Folk At Five, with "Pop", "Rock", "House" and "Disco" for Teatime With Trevox.
The Friday shows are available to listen again to on Mixcloud. Why not have a listen to some of them?
In radio spots, I often use the line "Music old and new, and sometimes a surprise or two". Artists and agents are welcome to suggest new music that they think would be suitable for airplay.