Usually the instruments used were one or two guitars, a bass, a drum kit, and sometimes a piano/organ/synthesizer (synth only in 80's or later)
The phrase used by Cleveland DJ Alan Freed was Rock 'n' Roll
Rock instruments played in a non-rock style. Or instruments from classical and electronic music. Or not. Is a very experimental music, it can be all or nothing.
Foghat in 1973
Rock 'n Roll beer used a picture of Chuck Berry.
Rock is normally louder because of the instruments used.
The best amplifiers used in a rock and roll concert is Marshalls. It has the best sound quality and it works well for rock, heavy metal, country, blues, and jazz.
It has been. In the 60's, one musician, Boots Randolph, specialized in saxophone rock and roll.
Obsidian
The Fender licensed instruments are for Rock Band. Guitar Hero used to have Gibson licensed instruments.
You... I have never heard the term "rock and role" i've heard to term "rock and roll" though, that was credited by Nick Tosches who used the words rock and roll in a title of his song (My daddy Rocks me (with one steady roll)
yes.