Neptune's Core is an alternative indie rock band made of two sets of sisters. Sofie and Hannah Richter and Jackie and Kaitlin Cywinski created the bad ass group in Chicago’s thriving indie-rock scene. Jim DeRogits summed it up best on Sound Opinions, "Their age belies the sophistication of the songwriting and instrumentation ... classic alternative era with delicate fragile quiet moments exploding into loud dynamics."

With a love of indie and punk music and a background in studying rock, jazz, and classical, Neptune’s Core reflects their growth in musicianship, songwriting, and as people with their latest offering, Called Upon (Side Hustle Records, 2023). Jill Hopkins of Metro and Opus Podcast says “few bands rise to the top through a mix of talent, timing, uniqueness, and natural charm. I have not seen many do that as well as the women of Neptune’s Core.” They look toward the future while also throwing things back to the 90s Chicago rock sound, with bands like Veruca Salt and Smashing Pumpkins being a big inspiration. The strong harmonies, powerful drumming, shimmery guitars, and unapologetic sense of self are what give Neptune’s Core their own, truly unique sound.