{"product_id":"martin-mp550t-strings-6-string-mp550-ph-trt-medium","title":"Martin MP550T Strings,6 String,MP550,Ph,Trt,Medium","description":"Built to achieve unmatched tone and playability, Martin Era™ strings set a new standard for what a phosphor bronze acoustic guitar string can be. Combining the best technologies from the Martin Strings lineup, Martin Era strings feature a patented Lifespan® treatment to protect against corrosion, Flexible Core construction to enhance fretability and comfort, and silk-wrapped ball ends—designed with vintage instruments in mind and as a premium touch that symbolizes Martin’s handcrafted string-making history. The Artist Light version was developed in collaboration with six-time GRAMMY® winner Jason Isbell and features a more traditional SP® core to match his signature guitar sound.","brand":"Martin","offers":[{"title":"Default Title","offer_id":48942674477248,"sku":"MP550T","price":17.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0754\/4002\/9888\/files\/MP550T_render_front.jpg?v=1788296754","url":"https:\/\/oklahomamusicco.com\/products\/martin-mp550t-strings-6-string-mp550-ph-trt-medium","provider":"Oklahoma Music Company","version":"1.0","type":"link"}