Ah, It's A Wonderful Cat Life

This slightly jazzy song is quite popular with Vocaloid audiences, and it works particularly well as a duet. Here we have the male Vocaloid known simply as 'VY2' leading the singing, with the delightful Mayu coming in a minute or so into the song.

It's quite good, but alas there are no English words provided, so best to treat it as just a pleasant musical diversion – it works well that way...