Reposted by Leo non Papa
Reposting only to observe the strangeness of this thumbnail image: metronomes mark time in a way, but are not time keeping devices - also, the performance time of Gyorgy Ligeti's "Poeme Symphonique" suggests this type of metronome cannot make sound for a full hour
youtu.be/-mUv705xj3U?...
youtu.be
György Ligeti - Poème Symphonique For 100 Metronomes
YouTube video by GBM Channel TV