Each concerto lasts exactly as long as its meteorological season: spring 1 March–31 May, summer 1 June–31 August, autumn 1 September–30 November, winter 1 December–end of February. The playhead is always at the present moment. The recording is time-stretched in the browser with Paulstretch (Nasca Octavian Paul), compiled to WebAssembly, by a factor of about 12,000; one second of music lasts about 3½ hours. Only the audio segments around the playhead are downloaded. The printed score shows the current position.

Recording: John Harrison (violin), Robert Turizziani (conductor), The Wichita State University Chamber Players. CC BY-SA 4.0, via the Internet Archive.