An American habit that spread to other territories.   It wrecks live concert recordings.   For some reason Americans often whoop when they recognise the first line of a well known hit by the artist, or a singer does a twiddly or trilling bit seen as complex. Talent shows are full of it. For annoying, think Simon and Garfunkel the Central Park Concert etc. When you want to listen to a song in a live version the whooping or cheering grates and stops the flow. Some will say it adds atmosphere, I just hate it! I'd wish they'd show appreciation after the song, not by interrupting it. Rant over, whooping is here to stay.