Walentina has 23 Jann concerts.

Jan Rozmanowski, known as Jann (born Feb 12, 1999), is a Polish singer-songwriter who blends pop, electro-pop, R&B, and ballad elements in his music. Born in Lublin and raised in Garwolin, he joined Warsaw's National Opera at 12 and later studied at Flynn Performing Arts and BIMM Institute. Relocating to Northern Ireland in 2015, his career launched with the successful debut single "Do You Wanna" in 2020, followed by hits like "Gladiator" and "Power," which is also the title of his first EP, released in 2022. Known for his strong vocals and catchy melodies, Jann has earned critical acclaim for his songwriting skills and stage presence, making him a rising star in Polish music. In 2023, he finished second in the final round of the show Tu bije serce Europy! Wybieramy hit na Eurowizję!, which is used to determine Poland’s Eurovision entrant.