The triangle is a percussion instrument made from a metal rod (usually steel) bent into an open triangle shape. The triangle is held suspended by a thread and played by striking it with a small metal beater. Different effects can be achieved by striking different parts of the triangle or by stopping or muting the sound with the hand. The triangle is an unpitched percussion instrument, meaning that it produces no particular note when struck, and so can’t be used to produce melodies or harmonies. The first prominent use of the triangle in a work for orchestra was in Franz Liszt’s Piano Concerto No.1 in E flat Major. The sound of the triangle is a clear and bright, high pitched, bell like sound and is very effective in creating moments of excitement and gaiety in music.