Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Fairly amazing!

I used these to replace the strings on a 3/4-size student guitar which my kids have never thought much of; it never stayed in tune and the intonation was terrible. With these strings, though, it's like a new instrument: absolutely playable and sounds great! I can't vouch for the quality of whatever was on there before, but I have to say that these strings can perform miracles under the right circumstances. They have a nice bright sound and impeccable intonation. Highly recommended!