One sunny spring day I heard the music coming down Karl Johan [street] and it filled me with joy. The spring, the sun, the music, all blended together to make me shiver with pleasure. The music added colour to the colours. I painted the picture [his painting 'Music on Karl Johan'] allowing the colours to reverberate with the rhythm of the music. I painted the colours as I saw them at that moment.

Quote in 'Livsfrisen tilblivelse', Blomqvist, Oslo 1929, p. 12