What basics can I practice to learn to play van halen - eruption solo.
I always consult either google or youtube to be familiar with the piece. There are a lot of videos online that may help you.
Pick-hand tapping, using the whammy bar to get to an exact pitch (rather than just waggling it), legato playing, controlling your sound on your amp - the list is endless, which is why it made such a good warmup exercise back in the day for students as well as for EVH himself.
"Be good at what you can do" - Fingerbanger"
I have always felt that it is better to do what is beautiful than what is 'right'" - Eliot Fisk
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Eddie used to warm up to Eruption? I didn't know that piece of trivia. Awesome.