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Alexander 23, born Alexander Glantz in Deerfield, Illinois, is a singer-songwriter and producer known for his emotive storytelling and polished indie-pop sound. Signed to Interscope in 2019, he released his debut EP, I’m Sorry I Love You (2019), followed by the full-length album Aftershock (2022) and the Aftershock Deluxe in 2023. He’s also recognized for co-writing and producing Olivia Rodrigo’s hit Good 4 U, a key track on the Grammy-nominated Sour. His breakout solo single, IDK You Yet, climbed to #19 on the US Billboard Hot 100, cementing his place as a standout voice in contemporary pop. Alexander 23 continues to connect with fans through intimate lyrics, relatable themes, and a vibrant social media presence. Here’s what to know about his career, discography, and upcoming shows.