Kieper's music is emotional, captivating, and diverse. It covers everything from mainstream pop to soulful ballads. His vivid stories cover a range of moving topics and take the listener on an emotional rollercoaster ride through his life. He writes his heartfelt songs in both English and German, and with just his guitar and voice, he mesmerizes the audience. His style is influenced by his big idols, Ed Sheeran, George Ezra, Adele, and the Beatles, and presents pop music in a fresh and authentic way.
In his new material, he not only talks about the ups and downs of the last few years, but also about mental health, love, and the pros and cons of introversion.