Another "Danny is a singer at the Iceberg Lounge" prompt.
Every now and then, we get a prompt where Danny Fenton (fleeing Amity Park for whatever reason) gets a job as a singer/performer at the Penguin's Iceberg Lounge. So here's a twist inspired by a RL band. If you've never heard of Postmodern Jukebox, they are a band with a fluctuating cast that do jazz/swing covers of popular songs of other genres. Look them up on YouTube. It's a treat! Anyway, PMJ doesn't exist in the DC universe, so Danny gets the bright idea of adapting modern popular tunes to a style more in line with what Mr. Cobblepot requires for the atmosphere of his club. The band (mostly to humor the kid) goes along with it and helps with the adaptation.
When Danny debuts the slow jazz cover of Bon Jovi's "Livin' On A Prayer", his voice all but rips the paint off the walls. The band's tip jar overflowed that night, so, not being one to pass up a good thing, they set to working on more covers/adaptations.
After a few skeptical looks, the Penguin has to admit this is a good thing. Not only is the atmosphere he desires for his establishment maintained, but, as word gets out, a larger and more diverse clientele is coming through the doors. News gets around and, of course, the Bats feel the need to investigate.
Who goes in "undercover" in civilian persona? Take your pick. He/she/they settle in with a drink they expertly pretend to sip as the lights come up on the 5 piece jazz band and a twink in a fedora behind an old timey microphone and THIS song starts playing...