Karaoke walks a fine line between fun and sad. We've all seen that 40-something dude croon Red Hot Chili Peppers' "Under the Bridge" three times a night or that dangerously drunk college girl cry-sing Adele's "Someone Like You." Enough is enough, karaoke mood killers. If you want tears with your tunes, head down to the basement of an Irish pub and jam your heavy hearts out. If you want to have a good time and unleash your inner rock star, sign up for Let's Sang! Described as "karaoke for nerds and music lovers," Let's Sang! was founded by Los Angeles native and Miami-based artist Oly Vargas. It began as a mobile karaoke event but recently found a home at Gramps the last Thursday of every month. There's never a cover, and from 8 p.m. to midnight, divas and karaoke virgins alike can choose from customized song lists that are filled with obscure numbers and posted online before each gathering. The pared-down playlists not only cut wait time but also eliminate those massive, sticky-paged songbooks. Before you rage at the loss of those Top 40 tracks, you can still request songs on Let's Sang!'s Facebook page before events. The selection is always satisfying and fresh, filled with everything from Peggy Lee, the Pixies, and Prince to Stevie Wonder, the Smiths, and Snoop Dogg. The most unique and fun aspect is the spontaneity. The event mixes up the playlist for holidays and special occasions and features interesting guest hosts, including musician Otto Von Schirach, artist Hugo Montoya, and beloved bearded drag queens Juleisy y Karla. Artist Liz Ferrer hosted the most recent ¡En Español!, with Spanish covers of karaoke favorites. Above all, Vargas' enthusiasm turns karaoke, which can often become a tone-deaf mess in lesser hands, into something truly special.