Themed Crossword #14: Terse Verse

Hi all! The original version of this puzzle didn’t have the poem below as instructions, but my tester was unable to solve that version. I’m pretty confident that now it’s safely in the easy-medium camp. Send your meta-answer, if you wish, to janglernpl at [Oasis member's first name and last initial, reversed] dot com. No prize, just bragging rights.

To solve this meta, if you choose,
First locate six distinctive clues.
Their answers, changed in certain ways,
Will lead you to a fitting phrase.

Terse Verse PUZ