Thank you!
Hah! Definitely no keyboard sounds on this. I think what you’re hearing are overtones from the guitars combined with the stereo reverb setup. Both these guitars are pretty nice instruments that produce beautiful overtones. (You can really hear the Martin’s overtones on this recording, which is just solo guitar and nothing else.) I also have the two guitars capo’d differently: the strummed Martin is capo’d on III, and the fingerstyle Yairi is capo’d on I. So even when they’re playing the same chords they’re using different voicings and have different timbres that blend together in the recording. The strummed guitar (the Martin) is also doubled and sent L and R, and the Martin-L track gets sent to a room-style reverb that is panned Right, and the Martin-R track gets sent to a room-style reverb that is panned Left. The master track applies a big hall reverb to everything.
Yes, I think it would be fun to play with the arrangement and the harmonies.
Cool; I’d love to hear your take on it.