New Gem | No More Learning

Had my lips been smitten into music by the
Kisses that but made them bleed,
You had walked with Bice and the angels on
That verdant and enamelled mead.

Word:

sunny

Question:

Why does the speaker suggest that if their lips had been made musical by painful kisses, the listener would have walked with angels?

Answer (optional):

The speaker suggests that if their lips had been made musical by painful kisses, the listener would have walked with angels because it would have led them down a path of glory and fame, potentially even resulting in being crowned and celebrated by mighty nations and joining the ranks of renowned poets like Keats.