Guitar strings age in several ways - they stretch, tarnish and get contaminated with sweat and dirt. Professional players change strings before each gig. For general light home use we would recommend you change your strings every 6 months as a minimum. If you play a lot then every few weeks would be more appropriate.

Changing strings can seem like a chore, but you will always be rewarded with a brighter, fresher cleaner sound from your guitar - whether it is electric, acoustic or classical.