In the 1800s, the original Mozart Hall was a social center and bar for German immigrants downtown. The bar, including the sign, moved to the Mayfair neighborhood in 1955. The Mo, as it’s known to regulars, was a favorite for decades before being rebranded as the Aqua Lounge for a time. But in 2016, new owners restored the name and the glowing neon sign, which beckons people to come inside for heavy pours and weekly events like line dancing on Wednesdays and popular karaoke nights on Thursdays and Sundays. Rock me, Amadeus.