Singing with an open voice, new tunes they brought.

This beautiful couplet suggests that true musical innovation comes from uninhibited expression. When you sing with an open heart and a free voice, without holding back, you naturally bring forth new and original tunes. It's about letting your true self resonate, allowing fresh melodies to flow effortlessly. This isn't just about music; it's a metaphor for any creative endeavor where genuine, unrestrained expression leads to novel and beautiful creations. So, sing freely, speak openly, and new wonders will emerge.