Hi, I'm new here. Sorry if this question has already been asked, I made a search but couldn't find... Anyway, I bought my new fender 50s p bass (yay!!) on saturday and, as I've heard that flats strings are great on p bass, I have decided to buy a set (I bought the Fender stainless flatwound long scale). I haven't change strings on an instrument for ages, but I guessed it was like riding a bike. Apparently not as I broke the E string, but fortunately I was able to put the old E string back as I remembered how to put a string correctly, after I broke the new one of course.... I've been looking everywhere and they don't sell single fender flatwound string. But i've seen that Ernie ball was selling single ones. So I was wondering if it was ok to put different brands on my bass. If not, I'll have to buy a new set again. Thanks.