All types of instruments are represented throughout AFRICA .  In general African music is closely linked to ritual and ceremonial activity but some music does exist for purely entertainment purposes.  There is a great variety of tone quality in African DRUMS which is one of the reasons for the unique sound.  Another reason that African music sounds so different and interesting is that unlike Western music, the pulse is not always performed even the constantly changing rhythmic combinations are linked by a felt beat or pulse which keeps the music fluid.