I agree about David and Kat....but it was too obvious. How many couples have the mate play the piano for the wife.
I do have to say that the female singers this season are amazing....all the performances are beyond just hearing a pretty song.
For me it was his movements while playing that makes me think it is them. I am wavering a bit on her, I have a few of her songs on my playlists but (and I know how a voice can change with age) she sounded a bit off to me.. but so did Toni, she had her mask on tho so I don't know.
I'm still listening to Cupcake, I feel bad that I am not even sure if it is a male or a female! The clues about being solo now have me thinking like family acts or 'family' groups like Sister Sledge, The Pointer Sisters, Jackson 5 (ANY of the Jacksons), DeBarge, Sly and the Family Stone.. heck are any of the Lennon Sisters around still? Cupcake clues are all over the map for me. the XOXO on the check made me think of Gossip Girl even.. OY!!