@Matt Holborn, you know, long ago, Matt Glaser, former head of Strings at Berklee School of Music, was giving a workshop, and he encouraged us all to know the lyrics to tunes. At the time, I thought it was just another thing to learn just because, but thought it didn't have much to do with my violin playing. Then one day I was working in the yard with a headset on, and a familiar tune came up to which I happened to know the lyrics well. I was singing along, and when the song went into a second part with an improvisation, I kept singing the lyrics and realized how the syllables were matching the pacing and pauses of the improvisation. The light bulb went off when I realized then the convenient importance of knowing the lyrics.