[quote name='JTUK' timestamp='1396604224' post='2415532']
It depends on what musical situations you put your self in...
If you have a bunch of jazzers busking standards..the leader will have pads
or dots and you will not survive ( even if you get invited on the gig ) if you are faffing around
in the dark.
So, first off, learn to follow a basic chart and follow chords. When you get to a solo...
and they will give you one or two... it helps to know what notes you need to be able to use over the changes
as all the band will stick to the chart.... or at least count the bars of the rounds so you all come back into together
from the top... ( ha, ha ..more terminology )
If you don't get to do this sort of thing, or don't want to.... or only play with 3 pieces, then you have less chances to clash
notes...
So, yes, happy and sad will get you far enough... but it wouldn't get you far if you want to play in more diverse situations....
Depends on the playing circle as well.... you just need to understanding the ways of communicating of the bands you get to play with.
The more you know, you can use it or not...but you don't have that choice if you don't have it.
so you'll never loose a gig just because you have knowledge, but there are a fair few that you will be excluded from
even thinking about....IMO.
[/quote]
This.. I have no interest in playing Jazz, or on a boat*, and I'm in bands with people who communicate in ways other than in-depth theory, so I don't feel limited.
[size=2]*Actually, I'v played on a boat quite a few times, but it was the Shields ferry on the Tyne.[/size]