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A guitar amplifier is an electronic device that transforms a board and  six strings into a furious agent of cultural change. The amps most  coveted by guitarists use vacuum tubes. These archaic bits of  technology heat electrodes in evacuated glass chambers, amplifying an  electric guitar's signal while also introducing much-desired distortion.  Give a vacuum tube too much power and . . .
  
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 IN THE BASSMENT
  
  
  
100 Bass Riffs is a  brief history of groove performed on bass guitar and drums. Marc Najjar  and Nate Bauman put together this incredible followup to Chicago Music  Exchange's viral video sensation "100 Riffs," with a compilation of  killer bass riffs performed in one continuous take. To view the gear  used in this video . . .  
  
 
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 WATCH THIS
  
 Pasquale Grasso  
  
Pasquale Grasso was born in Italy in 1988 and began playing  guitar at a   very young age.  Grasso's teacher was Agostino Di Giorgio, a Chuck Wayne  student and  jazz guitar innovator. Pasquale has been bebop  piano  master Barry Harris's teaching assistant for the last ten years.  Pasquale studied classical  guitar at the Music  Conservatory of Bologna  under Professor Walter Zanetti.  In  2012, Grasso moved to New York  City and quickly made a name for  himself. This is a must watch video . .  .
  
 
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Here's a short introduction to Guitar Forum 2.0 by GRAMMY® Nominated Music  Educator Mike Overly. Be sure to watch the complete first episode "Pentatonic and  Hexatonic Scales" at <https://www.youtube.com/watch?v=RIspMoyib2w> . . . 
 
 
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 GREAT GEAR
  
Frank Gambale and DV Mark worked together to develop an  all-in-one amp. The  incredible tones of Frank's signature amp called Ampli-tude are now  added to the virtual amps, incredible effects, features and  programability of the Multiamp. Plus, there are 20 finely crafted  presets by Frank built in also. The result is . . .  
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 ARTIST AWARENESS
  
Tommy TedescoTommy Tedesco played on 170 gold records. He played on hits by Elvis,  The Beach Boys, The Monkees,  The Mamas & the Papas, Frank Zappa and many others. He was the guitarist on TV themes for Bonanza, The Twilight Zone, Green Acres, M*A*S*H, Batman and many more. His movie credits include The Godfather, Jaws, Mission: Impossible, The French Connection and numerous others. Tommy was not, however, a faceless session player, he was famous! His Studio Log column in Guitar Player  magazine was a must-read for guitarists hungry for knowledge in the  '70s and '80s. And as part of the fabled Wrecking Crew team of session players, Tommy  Tedesco is the most-successful guitarist you've never heard of . . .. .   
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