If you can gig night after night, your strings should be able to keep up.
Martin SP Acoustic strings are designed with the performer in mind. Made with high tensile strength core wire and finished with the highest quality wrap wire, Martin's SP line of strings stands up to rigorous practice and performance schedules to deliver consistent true tone that you can count on song after song.
Martin & Co. designs and manufactures the strings themselves. Like their guitars, each string is made with patience, care, and precision with only the highest quality materials producing strings with exacting tone and superior performance. Not only are their packaging materials minimized and 100% recyclable, but the envelopes reduce the tarnishing effect on the strings.