Holger Dieffendahl – Pianist, Multi-Instrumentalist, Composer & Arranger
Holger Dieffendahl is a highly accomplished pianist, multi-instrumentalist, composer, and arranger based in Cologne, Germany. With skills in vocals, acoustic guitar, accordion, trumpet, and Harpejji, he has contributed to the music industry across different genres.
As a sought-after live and studio musician, Holger has performed as a keyboardist for CRO’s MTV Unplugged, James Blunt and The Voice of Germany. His skills as a arranger and copyist have been featured in major productions, including The Voice of Germany, The Voice Kids, MTV Unplugged and high-profile symphonic projects such as Red Bull Symphonics with Reezy (2025), Kool Savas (2023) and Loredana (2021). He also contributed to Teddy Teclebrhan’s One Mic Stand on Amazon Prime.
In addition to his performance career, Holger has collaborated as a composer and arranger with the renowned Budapest Scoring Orchestra, creating orchestral soundscapes that merge classical and contemporary elements. He served as Musical Director and performer for the GOP Varieté and Palazzo Varieté, crafting immersive musical experiences for audiences.
Holger’s interest in musical genres is as broad as his personal taste. „Music is all about energy! I feel it just as much in Stravinsky as I do in John Coltrane or the Beastie Boys!“
Beyond music, Holger is a passionate long-distance runner, often tackling marathon and ultra-distance races such as the 100km Run Taubertal100. „Running allows me to switch off while also pushing my limits. Many thoughts that occupy my mind or feel restrictive become clearer and more manageable when I’m out running.„
He is also the creative force behind Phinley, a neo-classical project that has amassed over three million streams on Spotify, blending cinematic soundscapes with modern composition. Sharing his knowledge and experience, he teaches as a lecturer at Macromedia University of Applied Sciences in Cologne, mentoring the next generation of musicians and producers.
With a deep passion for music and an impressive career spanning live performance, orchestral composition, and musical direction, Holger Dieffendahl continues to shape the contemporary music landscape.
holgerdieffendahl.com 