Instagram/Amanda Bynes & Fenix Flex Music Amanda Bynes releases debut single "Girlfriend," a catchy West Coast rap-EDM track featuring Fenix Flexin. A bold new chapter in music. April 11, 2026 AceShowbiz - Amanda Bynes has taken a bold turn in her career by releasing a fresh music single, stepping away from acting to pursue her passion for music. On Friday, April 10, she unveiled her new track titled Girlfriend, which merges melodic rap with EDM-inspired beats, offering a vibrant sound characterized by a smooth West Coast vibe.