Definitely, Diary of a Madman is like…the groundwork for so many great songs out there today. And if you listen to that live solo after Suicide Solution, which is only done live, it's just crazy what he could do that you didn't think he could do. If he was still alive, even if he left Ozzy, we would have seen even better stuff from him. Crowley and Crazy Train were actually more watered down marketable songs. That's more or less why Randy was GOING to leave Oz in the first place.
While tremolo is a change in volume, vibrato is a constant and repetitive change in pitch up and down. It can be used to make chord progressions shimmer and to add a wobbliness to single note lines. It is like adding vibrato with your finger, but it is constant and consistent. Controls are usually the same as tremolo pedals, with tap tempo also being common.
Because overdrive and distortion add a lot of high frequency harmonics to the signal they will quickly muddy up the sound if a large number of notes are struck simultaneously. i.e. full open chords and full barres don't work with overdrive, they muddy up. What you play are simple forms, generally no more than three notes simultaneously. For example an "A" power chord is (high E to low E)
A six-string guitar has five musical-intervals between its consecutive strings. In standard tuning, the intervals are four perfect-fourths and one major-third, the comparatively irregular interval for the (G,B) pair. Consequently, standard tuning requires four chord-shapes for the major chords. There are separate chord-forms for chords having their root note on the third, fourth, fifth, and sixth strings. Of course, a beginner learns guitar by learning notes and chords, and irregularities make learning the guitar difficult—even more difficult than learning the formation of plural nouns in German, according to Gary Marcus. Nonetheless, most beginners use standard tuning.
The hollow body electric guitar rose to prominence when Gibson introduced the ES-150 back in 1936. Fully hollow body electric guitars (sometimes referred to as “Jazz Box” guitars) tend to have arched tops and large, deep bodies that allow the sound to fully resonate to produce an incredible full-bodied voice with amazing projection and depth. Jazz players and blues players really love the sound fully hollow guitars deliver. While the classic, larger-bodied fully hollow electric guitars definitely still exist, there are also a substantial amount of thinline fully hollow body electric guitars that guitar players may find to be more comfortable. Guitar brands such as Gibson, Gretsch, Ibanez, D’Angelico, Guild, and Epiphone provide guitar players with a fantastic array of fully hollow body electric guitars.