Today i had a conversation with a guitarist friend who mostly plays blues and an experienced one. He told me that he prefers jazz bass rather than precison bass in a band. Not trying to start a jazz bass vs precison bass debate here by the way. Thats not my point. I asked him why and he told me that P basses have more heavy and punchy sound compared to jazz basses, so his guitar sound disappears in that punchy sound. Because of that he prefers more round and warm sound that his guitar sound can be heard better. I can hardly tell detailed stories in English due to my limited grammar and vocabulary, but it was like: If a punchy P bass is a square with corners, so does his guitar sound. When played together two cornered sounds doesnt go well together, so he needs circles or ellipses instead of cornered sounds. He told me this in a technical way of course, but i cant completely explain the details correctly Back to my question, as far as i know there are many bass guitarists using P bass without a problem in a band, especially in a blues band. So i wonder is this the reason people use flats in order to decrease that punch and get a warmer sound? What else should i consider in that matter?