A bit more about 'Positioning'...
What we are all looking for is a USP - unique selling point...a differentiator...something that sets you apart. Your positioning could be any of these or many others...the keyboard player who:
cracks jokes as well; responds instantly to any musical request; has a great team of singers which he/she backs; is able to provide disco as well as playing live; creates a funky atmosphere which definitely gets the audience on their feet dancing etc etc etc
Or perhaps all of these if you're a real genius...I am joking of course...
Look at how different food stores position themselves differently from one another to meet the needs of the niche they have identified as THEIR GROUND.
Hope all this helps.
Rog