sentences:  The performance, sung by soprano Rhian Owen and baritone Dominic Burns, was timed at 4 minutes 9 seconds, and was certified by adjudicators from the Guinness Book of Records as the world's shortest opera, beating the previous record held by Darius Milhaud's "Deliverance of Theseus" (1928), which lasts just over 7 minutes.A later performance for the BBC reduced the overall time to 3 minutes 34 seconds.In 2019, "Sands of Time" was performed in a triple bill (with Samuel Barber's "A Hand of Bridge" and Jacques Offenbach's "Le 66") at the Grimeborn Festival, Dalston, London.