The Gibson L-4 archtop became jazz�s greatest rhythm instrument in the hands of six-string innovators like the virtuoso Eddie Lang in the 1920s and assured the company�s dominance of the guitar market even before the outbreak of World War I. But the L-4�s story - how it evolved from an acoustic guitar to the dynamic L-4 CES Mahogany Archtop of today - is perhaps the best illustration of Gibson�s historic dedication to endlessly refining and improving instruments that are already world class.