How to hold the guitar (so that the instrument is stable and both right and left hands have full range of motion) has been a challenge to players since the four-course guitar evolved into a serious concert instrument. Dionisio Aguado (1784- 1849) one of the greatest virtuosos of his (or any) time, developed the "tripodion" in order to attain an efficient playing position. (The bulky "tripodion" never caught on.) Segovia - the classical guitar's recent "refounding father" codified a "footstool under the left leg" as stock-in-trade for every guitarist.
Since the awareness of Ergonomics became more of a focal point in recent years, guitarists have sought alternative solutions. The footstool distorts a balanced spine position wherein one side is considerably higher than the other. Concerned players queried "How do I lift the guitar without lifting my leg!?" Soon various "interceding devices" were born: cushions, frames, straps, suction-cup holders, etc. Some worked well (in terms of a properly aligned spine) but often with the trade-off of a feeling of instability. As a performing guitarist I sought "ergonomic correctness" in order to assure the most practice time with the least physical strain. I practiced, performed, and lived with these devices on a daily basis. I heard of a new device (new to me) about a year ago called the ErgoPlay (which comes from Germany). I tried one and was immediately impressed by its vast improvement over all such devices I had tried up to that point. I've used it, and continue to use it to the present day.
Recently I had the good fortune to be in contact with Mr. Andreas Härtl - president of the ErgoPlay company, and was informed of two "new models" which are variations of the basic ErgoPlay concept. The new model "Tappert" I have been playing in concert recently, and again I am most impressed by the subtle yet substantial improvements in what I consider the preeminent product in the field. The model "Tröster" - for alternate playing positions (as body sizes, shapes, and playing styles come in many variations), I am also currently testing (with most positive results). For anyone but the most casual player - and certainly for the serious student or performing professional an ErgoPlay is an ergonomic "must-have" and, with the numerous varieties available (Professional, Tappert, Tröster, children's, and left-handed) there truly is an ErgoPlay for everyone.
For more information:
http://www.ErgoPlay.de/