Yeah, while technically an illegal reference as the intended clue:
A) The reference played no impact on the decisions of the guesses
&
B) Circle IS defensible as a Musical Clue (music being sung in Rounds).
My thought, which I had expressed to Swowl after he guessed Circle, was that Infinity was used here to express that the second word COULD be tied to “Musical”, but was NOT the obvious “2” clue of Whistle - that is, the clue said “Look for another Musical connection that isn’t the obvious” - which would’ve possibly indicated either Circle or Wave.
For us, we have 3 left - I’m assuming France (French Press (coffee/Starbucks), City of Love (Marriage), French Dip (Sandwich)) was one. Wagon probably for Marriage as well (Hitch the Wagon)… and I’m not sure on the third.