Thanks to powerful new generative artificial intelligence tools, it’s getting difficult to tell if your favorite artist is actually singing — or in a great many cases, rapping — on tracks floating around YouTube, Instagram, and TikTok. In February, superstar DJ David Guetta posted a video clip of himself live in concert, playing a song that he created using AI-generated Eminem vocals, clearly without the rapper’s permission. Then there’s “Savages,” a track by French hip-hop act AllttA that uses AI-generated vocals of Jay-Z , whose “familiar voice adds something ineffably compelling to the track,” according to New Yorker writer Kyle Chayka . More recently, “Heart on My Sleeve” — an impressive AI-created Drake/ The Weeknd collaboration that some suspect is a startup’s marketing ploy — went viral on social media. More tracks like these keep appearing every day, many of them faux cover songs made by relative unknowns. And not everyone is pleased.…