The secondary dominant chords of the key of C major, each given before the chord of which it is the dominant. Digital recording, made with an acoustic piano and Wavesurfer software by Opus33. This music is in the public domain. The recording is not copyrighted, and it is hereby released by Opus33 into the public domain. The following tag, though it is not quite accurate, is included in order to authorize this file according to the Wikipedia rules:
Author: Opus33 at English Wikipedia