In this video the, Hall of the Mountain King, the speed of the piece starts off slow and gradually becomes fast so that by the end of the piece, the tempo of the piece is very fast.
Duple time means that each bar is divided into two beats. The song Honey Honey has a 2/4 time signature beats one and two are equally accented.
Triple time means each bar is divided into three beats. In 3/4 time the first beat is usually accented, giving the piece of music a waltz like feel.
Quadruple time means each bar is divided into four beats. In 4/4 time usually the accent falls on the first beat of the bar.
A Rock Beat is also in 4/4 time, however the accents of the beats fall on beat 2 and beat 4. This is called a back beat.
Here is a great example of a rock beat in Michaels Jackson's Billie Jean.
Rests are silences or pauses in music.Â
Pulse - repeated beats that progress the music in time. In this example you can hear the clapping sticks used to keep the pulse of the music going.
Ostinato is a continuously repeated musical pattern. In this example of Bolero by Ravel, the drummer is paying a rhythmic ostinato throughout the piece.
Syncopation is when a rhythm has accents on weak beats or in between beats, making the feel of the rhythm unexpected. In Ricky Martin's La Bomba the trumpets, piano, bass and percussion instruments are playing different syncopated beats which is why this song make you want to get up and dance.