Any guitarist will tell you that it's important to have single replacement strings on hand so you're not out of luck the next time a string breaks. Having an assortment of single acoustic guitar strings is a great way to make sure you're never caught in a jam when it comes to keeping your instrument in performance ready shape. The most convenient aspect of buying single acoustic guitar strings is that you can have an assortment on hand if you have a particular string that needs replacing more often than others. For example, let's say you have a tendency to break your high e string more often than others. You can easily buy a bulk package of high e strings here, so you'll always be prepared and have extra available.
It's also important to make sure the individual strings you're buying complement the strings you already have on your guitar. If you've got five phosphor bronze strings on your guitar, it may sound strange if you add a stainless steel string to the mix. The same can be said of gauges. If your guitar has light gauge strings on it, you'll probably want to add a similarly gauged string to the mix. That's not to say you can't mix and match if you have a certain sound you're looking for. With almost everything musical, it all comes down to personal preference. Whatever sounds best to you is what the option you should go for. Whether you are getting extra prepared for a gig, or you've just noticed a tendency to break a certain string more than others, buying single acoustic guitar strings can be of great benefit to any musician. With individual strings on hand you'll be able to quickly replace any string at a moment's notice, without having to open an entire package or re-string your instrument completely. Professionals and hobbyists alike should always have extra strings on hand, and now it's easier than ever to make sure that you do.