 For Armstrong and for others who have followed, it sometimes gives their lips a break. As tough as singing is, it's a whole lot easier on the lips than blowing into a wind instrument perpetually. I remember people talking about, you know, the problem that John Coltrane had with his teeth in his mouth, that sometimes, you know, the horn would be filled with blood when he, you know, when he took it out of his mouth. And we think about, you know, just the physical aspect of playing these instruments. How did these individuals deal with that?