A helpful musician

My husband was showing an out of town friend the way to a local music story where the friend could buy strings for his guitar.  We live downtown and there is always a broad variety of people on Queen Street W near Steve's Music.  Some were amblers, some were shoppers, others were street people asking for money.  Our friends decided to buy two sets of strings at the music store.  On their way back home, my husband watched our friend, bend down to give a street person playing a guitar one set of strings.  Later, he explained that he noticed some of that person's strings were missing when he heard him play as they walked on their way to the store.  "It's his living", our friend said, "we should always help someone make a living".