Tanglewood TWGS12 coated Phosphor Bronze Acoustic guitar strings. 12-53Tanglewood TWGS12 coated Phosphor Bronze Acoustic guitar strings. 12 53 Medium Light . 12 . 53 In production collaboration with one of the worlds largest string manufacturers, Tanglewood Guitars have developed a string range, with gauges specifically road tested over many years to be comfortable and practical for every style of acoustic player. The unique vision a luthier has in all aspects of an instruments performance led to the creation of