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At least he tried different, lovely sounds touching notes on each. I have only witnessed was a lap steel slide guitar.

Lap steel guitars take some real skill to master.

Fascinating to watch it being played, enjoyable tones/chords obtained as well, I cannot remember which band I saw performing using one at the time.

Juicy Lucy were a band I am familiar with, Glenn Ross Campbell performed using one. My collection Lie Back And Enjoy It (1970).

This guy is one of my favorites to watch for slide guitar, really great technique.

Sounds awesome, always enjoy hearing any instruments played well.