
Chicago native Alexander Glantz is the creative force behind Alexander 23. In March 2019, he made his debut with “Dirty AF1s,” which climbed to the top of the DSP charts. Later in the fall, he shared his debut, critically acclaimed EP I'm Sorry I Love You and spent the rest of 2019 on tour with Omar Apollo. He kicked off 2020 by selling out his debut headline shows and then releasing his RIAA Platinum-certified track “IDK You Yet.”
In 2021, Alexander 23 sold out his debut headline tour and followed that up with a Grammy nomination for his co-production on “good 4 u” by Olivia Rodrigo. Dan Nigro and Alexander co-produced his debut album Aftershock, which arrived in the summer of 2022 following his support of John Mayer on the Sob Rock tour. He followed that up with his first world tour in the fall of 2022.
Alexander supported Lauv on tour in Asia, executive produced Reneé Rapp’s debut album Snow Angel, and co-produced “get him back!” by Olivia Rodrigo, all in 2023. Next, Alexander co-wrote and co-produced songs on Joe Jonas’ album Music For People Who Believe In Love and the Jonas Brothers’ album Greetings From Your Hometown.
In 2025, he executive produced Reneé Rapp’s second album BITE ME and LAUNDRY DAY’s album Earworm. He also launched his label Deerfield Records in partnership with Interscope Records and announced its first signing: Leyla Ebrahimi.