yes, he was sly's bassists from 1967-72.
your band can play anywhere that live music is played, but consider your audience, some like different music than others
yes all instrument
Randy Rhoads formed Quiet Riot in the mid -late 1970's, then He played for Ozzy Osbourne from 1980-1982. His career was cut short by a freak airplane accident while still in Ozzy's band.