G7TH 200-058 Capo Nashville Since the launch of the company in 2004, G7th has repeatedly raised the bar in capo design and development. Introduced in 2007, the G7th Nashville capo marked an important development in the evolution of an existing popular capo design, removing some of its inherent problems, and taking styling to a whole new level. The G7th Nashville Capo is a simple spring capo design. Spring capos are popular with players who value their speed and simplicity. Other spring capos have 2 major problems. Strong springs over tension the strings, which can result in serious tuning problems. The thickness of the rubbers can cause your guitar to lose tone. Many spring capos allow metal parts to contact your guitar neck. The strength of the spring can make them heavy to operate.