Day 33 of The Year Apart (and Sometimes Not)

For this week's a cappella challenge, Davis sent this one:

"Today's Challenge:

Pick a stray melody from your voice memos (under 30sec) and record it in the middle of a three-frame a cappella video. Send it to me and I'll do the same. Add top and bottom harmonies. Post it."

Here's Davis' piece with Charles' harmonies:

Here's Charles' piece with Davis' harmonies: