might be secured to single-headed drums by pegs, nails, glue, buttoning (through holes in the membrane), or neck lacing (wrapping a cord around the membrane overlap). Double-headed drums were often directly cord-tensioned (i.e., through holes in the skin). Modern European orchestral drums often combine two hoops pressing against each head (one rolled in the skin, the other outside) with indirect lacing (i.e., to the hoops).