steel guitar

— Steel guitar — in which the player used a metal or glass slide to note the strings — became popular when Hawaiian musicians, such as master steel guitarist Sal Hoopi, toured and recorded in the 1910a and 1920s.

— While the acoustic guitar is stereotypically tied to country music, the pedal steel guitar, perhaps even more so than the acoustic guitar, represents country music by virtue of its visual appearance and more importantly its sound. […] During the 1950s and the era of the Nashville Sound, artists like Jim Reeves, Patsy Cline, Eddy Arnold, and Ray Price eschewed the hard country sounds of the steel guitar and fiddle and replaced them with softer back-up singers and string sections as they strove for a homogeneity that would appeal to a wider audience.