$drums = new DrumSet("zestaw tama maple");
$drums->add(new SnareDrum("werbel"));
$drums->add(new BaseDrum("duy bben"));

$cymbals = new Cymbal("zestaw talerzy zildjian");
$cymbals->add(new Cymbal("may talerz"));
$cymbals->add(new Cymbal("duy talerz"));
$drums->add($cymbals);