Boris Blank is a Swiss musician known as the musical part of the duo Yello with Dieter Meier. He composes the songs and is responsible for the characteristic sound, having the reputation of a perfectionist. Blank considers himself as a constructor of music, starting composing with manipulation of self-recorded samples and finishing the tracks with the participation of invited professional musicians.

Prior to his musical career, Blank worked as a truck driver. As a child he was very interested in music, but had no formal training. He never learned to read musical notation but always was interested in producing new sounds and samples. Blank began experimenting with tape loops and echo effects as a teenager. He recorded water sounds from a bucket of water and played sounds on a homemade bamboo flute. It was in this period he met Carlos Perón. Later, they formed Yello, with Dieter Meier as a conceptualist, vocalist and lyricist.

He also composes and produces solo music, under the name Avant Garden, which is strictly intended for licensing to the film and TV production industry. This music is handled by Extreme Music.