Audiocontrolled Bird Songs: Eurasian Skylark

This is the unedited recording of an Eurasian Skylark song (Alauda Arvensis). Its marvelous song could be very long (up to 30 minutes) and incredibly dense: a frantic, uninterrupted flow of verses and patterns. The visual reacts in realtime to 10 different frequency bands of the audio. Recording by Peter Boesman, downloaded from Xeno Canto: