What are the instruments in this song? [Siren, theme to Home Fires]

Cafe Society
1

I’ve been listening to this song almost obsessively, trying to figure out all the instruments used in it[sup]1[/sup]. The song is performed by Synergy Vocals and multi-tracked so that each of the four women sing all four parts. It’s impressive, but makes it hard to hear all the instruments.

So far, I’ve identified, I believe, a violin, cello, bass, piano, flute, and (maybe?) a metal-strung guitar. But I’m not sure of that last, and there’s also a something providing a regular rhythmic beat that might or might not be clapping.

This is a link to a Youtube video of the song. I’m sure there are plenty of musicians on the Board who can tease out what the instruments are, and I’m hoping they’re willing to help.
[sup]1[/sup]The song is beautiful, and that’s the only explanation I have for why I’m still trying to figure this out.

2

All I’m hearing is the strings and piano, and perhaps some sort of percussion.

3

I’m not positive about the flute. I bought the full-length song from Amazon, and somewhere between 1:05 and 1:15 there are about 3 notes that sounded like a flute to me. The sort of regular “ticking” sound to me is what I thought might be someone strumming a pick across metal strings, but (as I neglected to say), I’m not a musician, so it’s just me guessing. And yes, percussion. Someone has suggested it might be clapping, but it seems too quick.