For many years David Holler has been part of the Swiss music scene working as a singer, songwriter and music producer. He’s co-written many songs with major artists and industry notables such as Grammy Nominated producer Ben Mühlenthaler, Stephanie Heinzmann, Anna Rossinelli, Roman Caminzind, Chris Von Rohr, Reto Burrell, Luca Hänni, Mr. Da-Nos, Johnny Rivers, Supertramp’s Bob Siebenburg, D.J. Bobo, Caravan, Pablo Ill and French movie star Arielle Dombasle. David also co-wrote 'Voice of Freedom' with Grammy Award winner Angélique Kidjo. In 2004 and 2005, he co-wrote 15 songs which appeared on 3 consecutive Number 1 albums.
In 2017 his album ‘Offline Friends, established himself as a recording artist/producer in his own right. His debute single 'When You Were Still In Love With Me,' went on to be one of the most played songs on Radio Swiss Pop that year (over 1.5 million listeners a day). His song 'Drive On' feat. Grammy Award Winner Brent Mason (co-written by Daniel Marbot) was also one of the most played songs on Country Radio Switzerland. David was also the personal vocal coach for the choir singers and Roger Federer in the 2020 Sunrise commercial 2020.