Dear Shar, I have just put one of the 3 A strings I purchased from you on my violin, but I don't remember which one it was. I wanted to get different ones to check them out, but know that it won't make much difference. I usually change strings when they start fraying. From my 50+ years of playing, I know that I won't keep track of which ones I use, or even when I change them, no matter how much I mean to. I am grateful that you stock so many options, and I heartily thank you! I am a middling player, but it brings me so much joy. Thank you!