Harmonica & Guitar Performance by StoryTellers - Marcian Petrescu & Florin Giuglea: Room to move @ Dichis'n'Blues Festival, Tulcea, Romania

Harmonica:
The harmonica, also French harp,
blues harp, and mouth organ,
is a free reed wind instrument used
worldwide in many musical genres,
notably in blues, American folk music,
jazz, country, and rock and roll.
There are many types of harmonica,
including diatonic, chromatic, tremolo,
octave, orchestral, and bass versions.

A harmonica is played by using the mouth
(lips and/or tongue) to direct air into and out
of one or more holes along a mouthpiece.
Behind the holes are chambers containing at
least one reed.

A harmonica reed is a flat elongated spring
typically made of brass, stainless steel, or bronze,
which is secured at one end over a slot that serves
as an airway. When the free end is made to vibrate
by the player's air, it alternately blocks and unblocks
the airway to produce sound.

Guitar :

The guitar is a popular musical instrument classified as
a string instrument with anywhere from 4 to 18 strings,
usually having 6. The sound is projected either acoustically
or through electrical amplification.
It is typically played by strumming or plucking the strings
with the right hand while fretting (or pressing against the fret)
the strings with the left hand.
The guitar is a type of chordophone,
traditionally constructed from wood and strung with either gut,
nylon or steel strings and distinguished from other
chordophones by its construction and tuning.
The modern guitar was preceded by thegittern,
the vihuela, the four-course Renaissance guitar,
and the five-course baroque guitar, all of which contributed
to the development of the modern six-string instrument.

Electric guitars, introduced in the 1930s, use an amplifier
that can electronically manipulate and shape the tone.
Early amplified guitars employed a hollow body,
but a solid body was eventually found more suitable,
as it was less prone to feedback.
Electric guitars have had a continuing profound
influence on popular culture.

The guitar is used in a wide variety of musical genres worldwide.
It is recognized as a primary instrument in genres such as blues,
bluegrass, country, flamenco, folk,jazz, jota, mariachi,
metal, punk, reggae, rock, soul, and many forms of pop.

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