Some information on Easy 3rd Tuning on my web site. I have a description, layout and even a sound sample http://1623customharmonicas.com/2015/05/17/easy-3rd-tuning-for-effective-3rd-position-play/ *Greg Jones* *16:23 Custom Harmonicas* *(210) 445-6600* Web Site: 1623customharmonicas.com Seydel Repair: http://1623customharmonicas.com/repair-services/