Listen to Concerto for 2 Flutes & Bass Instrument in A Minor, TWV 53:a1: I. Lentement online. Concerto for 2 Flutes & Bass Instrument in A Minor, TWV 53:a1: I. Lentement is an English language song and is sung by Karl Kaiser. Concerto for 2 Flutes & Bass Instrument in A Minor, TWV 53:a1: I. Lentement, from the album Telemann: The Complete Wind Concertos, was released in the year 2015. The duration of the song is 2:28. Download English songs online from JioSaavn.