“With 44-Down, go out with a bang ... or a hint to 16-, 21-, 29-, 34-, 46- and 54-Across”

Instrument depicted in Manet's "Young Flautist"

Threat to a king, maybe

Join up with at church?

Something that's often clicked

Scout camp craft

Kerchak or Kala in Disney's "Tarzan"

"Sweet!"

Frame, apron, molding, etc.

Maker of the world's largest quantum computer