Slack Key Guitar

Sacred steel is an African-American gospel tradition in which the lap steel or pedal steel guitar becomes the lead "voice" of the church band. It emerged within the House of God (Keith and Jewell Dominions) and related Pentecostal congregations, where the instrument accompanies sermons, prayers, and ecstatic worship. The style is defined by vocal-like slides, wide vibrato, call-and-response with the congregation, and high-energy "shout" sections driven by a tight rhythm section and Hammond organ. Harmonies draw on gospel, blues, and rhythm & blues, while the steel guitar articulates melodies as if singing, often quoting hymns and spirituals. Since the late 1990s it has also crossed into secular stages, influencing roots-oriented rock and jam scenes while remaining a living church tradition.

Slack-key guitar (kī hō'alu) is a Hawaiian fingerstyle tradition for steel‑string acoustic guitar distinguished by "slacked" open tunings, flowing treble melodies, and a steady alternating bass played by the thumb. It emphasizes ringing open strings, harmonics, and graceful vamps that frame vocal or instrumental melodies tied to Hawaiian poetry and place names. The result is a relaxed, singing guitar sound that can feel both intimate and spacious, often accompanying hula or standing alone as a solo art.