I pulled out 29A One in peak singing condition?: YODELER because I actually think that was pretty good.

Also here’s Jewel yodeling:

Theme!

18A With 20-Across, goes to great lengths: BENDS
20A BACKWARDS to make BENDS over BACKWARDS.

35A With 39-Across, superior: ACUT
39A THEREST to make A CUT above THE REST.

36A THEBELT
41A With 36-Across, plays dirty: HITS to make HITS below THE BELT.

55A THE BRIDGE
60A With 55-Across, no longer an issue: WATER to make WATER under THE BRIDGE.

Finished this one in 12:49.