The music and the horses at the Olympics

"The Grand Prix Freestyle event, where riders can choose their own music and moves rather than go through a pre-set test, is the blockbuster event of Olympic dressage" - NPR goes into equestrian events at the events, and the music it is being performed to. So, what is it that the horses like? "Norway's Carina Cassoe Kruth went for an 80s medley including 'I Want To Know What Love Is' by Foreigner and 'Footloose' by Kenny Loggins. The U.K.'s Carl Hester rode his horse, En Vogue, to groovy disco music that channeled the Bee Gees. Germany's Isabell Werth looked to the majesty of Beethoven's 'Ode To Joy' for her performance".