It's a Malay tradition to have 'kompang' played in a wedding. It has nothing to do with the wedding ceremony however it's a good 'traditional beat' that is being taken out by modern music and paid deejay.
There are types of Kompang and this one is known as Kompang Jawa. A major diference with Kompang Malayu is the big drum made from cowhide, known as 'Beduk'. Other Kompang players may use Gong to replace the Beduk.
This is my niece's wedding.
This Kompang group was founded by my late father and the tradition is kept alive, thanks to my brother.