Rock and roll Great Double Bass Performance Impro Slap by " Stéphane Barral ".Enjoy !!!

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Stephane Barral is a brilliant Musician in "Sweet Mama" and "Las Vargas" bands.

The double bass, also called the string bass, upright bass, bass fiddle, bass violin, doghouse bass, contrabass, bass viol, or stand-up bass, is the largest and lowest-pitched bowed string instrument in the modern symphony orchestra, with strings usually tuned to E1, A1, D2 and G2 (see standard tuning). The double bass is a standard member of the string section of the symphony orchestra[1] and smaller string ensembles[2] in Western classical music. In addition, it is used in other genres such as jazz, 1950s-style blues and rock and roll, rockabilly/psychobilly, traditional country music, bluegrass, tango and many types of folk music. A person who plays the double bass is usually referred to as a bassist.
The double bass stands around 180 cm (six feet) from scroll to endpin,[3] and is typically constructed from several types of wood, including maple for the back, spruce for the top, and ebony for the fingerboard. It is uncertain whether the instrument is a descendant of the viola da gamba or of the violin, but it is traditionally aligned with the violin family. While the double bass is nearly identical in construction to other violin family instruments, it also embodies features found in the older viol family.
Like many other string instruments, the double bass is played either with a bow (arco) or by plucking the strings (pizzicato). In orchestral repertoire and tango music, both arco and pizzicato are employed. In jazz, pizzicato is the norm, except for some solos and also occasional written parts in modern jazz that call for bowing. In other genres, such as blues and rockabilly, the bass is plucked.
When playing the double bass, the bassist either stands or sits on a high stool and leans the instrument against the bassist's body with the bass turned slightly inwards in order to more easily reach the strings. This stance is also a key reason for the bass's sloped shoulders, which mark it apart from the other members of the violin family, as the narrower shoulders facilitate playing of the strings in their higher registers.
The double bass is a transposing instrument and sounds one octave lower than notated.
Blues is the name given to both a musical form and a music genre[1] that originated in African-American communities of primarily the "Deep South" of the United States at the end of the 19th century from spirituals, work songs, field hollers, shouts and chants, and rhymed simple narrative ballads.[2] The blues form, ubiquitous in jazz, rhythm and blues, and rock and roll is characterized by specific chord progressions, of which the twelve-bar blues chord progression is the most common. The blue notes that, for expressive purposes are sung or played flattened or gradually bent (minor 3rd to major 3rd) in relation to the pitch of the major scale, are also an important part of the sound.
There are also 16-bar blues, as in Ray Charles's instrumental "Sweet 16 Bars" and in Herbie Hancock's "Watermelon Man". Idiosyncratic numbers of bars are also encountered occasionally, as with the 9-bar progression in "Sitting on Top of the World" by Howlin Wolf.Like jazz, rock and roll, heavy metal music, hip hop music, reggae, country music, and pop music, blues has been accused of being the "devil's music" and of inciting violence and other poor behavior.
Perhaps the most visible example of the blues style of music in the late 20th century came in 1980, when Dan Aykroyd and John Belushi released the film The Blues Brothers. The film drew many of the biggest living influenciers of the Rhythm and blues genre together, such as Ray Charles, James Brown, Cab Calloway, Aretha Franklin, and John Lee Hooker. The band formed also began a successful tour under the Blues Brothers marquee. 1998 brought a sequel, Blues Brothers 2000 that, while not holding as great a critical and financial success, featured a much larger number of blues artists, such as B.B. King, Bo Diddley, Erykah Badu, Eric Clapton, Steve Winwood, Charlie Musselwhite, Blues Traveller, Jimmy Vaughn, Jeff Baxter.