Tabby has really taken to music, unsurprisingly, as her dad has been educating/torturing her with all sorts of, well, whatever I feel like listening to that day. No matter, she'll play any instrument when she's inspired. Which is lots of time, really. Whether it's beating stick-like things (say markers) on the floor like a drum, pounding a piano, stumming a ukulele, or beating the ukulele with stick-like things like she's in Sonic Youth. That's my girl. Anyway, she's a singer songwriter and she's put together a whole repertoire. "Mommy in the Moonlight," "Toast and Marg," "Bubbles" to name three. And all of her songs has the repeated lyric "as you know." It's like a lyrical placeholder that never got cut in the editing stage. Brilliant. Leaves them (Mom and Dad) rolling in the aisles every time.
Anyway, tip of the hat to Ashish Vengsarkar for help with today's puzzle. An alternate version of it appeared at this year's New Jersey Regional Science Fair.
Share the puzzle. New one on Monday.