Whom Have I but You? Chords

Can you guess who jams on Whom Have I but You??

What chords are in Whom Have I but You??

What is the BPM of Vineyard Music feat. Brian Doerksen and Loralee Thiessen - Whom Have I but You??

Which chords are part of the key in which Vineyard Music feat. Brian Doerksen and Loralee Thiessen plays Whom Have I but You??