Listen to The Heat Is on in Saigon (From 'miss Saigon') online. The Heat Is on in Saigon (From 'miss Saigon') is an English language song and is sung by Riverfront Studio Singers. The Heat Is on in Saigon (From 'miss Saigon'), from the album The West End's Best Songs, Volume 2, was released in the year 2021. The duration of the song is 5:03. Download English songs online from JioSaavn.