Letter M Rap

The Letter M Rap is one of Discofurby's songs that came to her/me in a dream. In the dream, I am looking at an alphabet that is missing the first letter of my name (M), and am supposedly rapping about the uses/joys of the letter "M", but as it is a dream, it is unexplained the alliteration around the letter "B" in the song, and it is also unexplained the usage of the colour blue.

Lyrics
Where do we find those letter "M"'s?

Where do they come from? Nobody cares!

You can bunch it up in a blue baret! You can bundle it up in a blue boquet!