References

http://blog.thempowergroup.com/wp-content/uploads/2013/06/tumblr_lumrmaXdpn1r5bg4ko1_500.jpg

http://www.hendersongroupltd.com/historybagpipes.asp

http://soundcalledmusic.com/bagpipes/

http://sitemaker.umich.edu/musicalinstruments/bagpipes