Similar to Męskie Granie, this touring event brings some of the Poland's top musicians together for a weekend music festival in 5 major Polish cities. Sponsored by Santander, Poznań's event will take place in the open air of Citadel Park, with two days of solo concerts by the biggest Polish stars, as well as premiere special projects. There is also plenty of room for young and independent artists who present a fresh, musical vision. On that last note, Letnie Brzmienie includes the latest edition of the Babie Lato collective - a special musical project that creates a girl band specifically for the tour, premiering a joint song each summer.

In 2025, young Polish stars Margaret, Zalia and Sara James have joined forces in Babie Lato, and will play at each stop on the tour. The cult band Hey have also reunited for the tour and will share the 2025 festival line-up with Mrozu, Coma and others. Check the website for more info.