Slack-key guitar

[1] The style of Hawaiian music that was promoted as a matter of national pride under the reign of King David Kalākaua in the late 19th century combined rhythms from traditional dance meters with imported European forms (for example, military marches), and drew its melodies from chant (mele and oli), hula, Christian hymns (hīmeni), and the popular music brought in by the various peoples who came to the Islands: English-speaking North Americans, Mexicans, Portuguese, Filipinos, Puerto Ricans, Tahitians, and Samoans.

[5] During the 1960s and particularly during the Hawaiian Cultural Renaissance of the 1970s, slack key experienced a surge in popularity and came to be seen as one of the most genuine expressions of Hawaiian spirit, principally thanks to Gabby Pahinui, Atta Isaacs, Leonard Kwan, Sonny Chillingworth, Raymond Kāne, and the more modern styles of younger players such as Keola Beamer, his brother Kapono Beamer, Peter Moon, and Haunani Apoliona.

Players from outside Hawaiʻi have also taken up the tradition, for example, Chet Atkins (who included slack key pieces on two of his albums), Yuki Yamauchi (a student of Raymond Kāne's and an advocate of Hawaiian music in Japan), pianist George Winston, and Canadian Jim "Kimo" West (perhaps better known as guitarist with "Weird Al" Yankovic).

Mike McClellan and George Winston have developed similar schemes that organize the tunings by key and type.

Many kī hōʻalu players incorporate various embellishments such as harmonics (chimes), the hammer-on, the pull-off, slides, and damping.

Slack key compositions exhibit characteristics from indigenous Hawaiian and imported musical traditions.

Wahine tunings have their own characteristic vamps (as in, for example, Raymond Kāne's "Punahele" or Gabby Pahinui's 1946 "Hula Medley") and require fretting one or two strings to form a major chord.