Three stunning voices, three beautiful women, three best friends.
The name of this pop-opera trio is a very clever word-play, called a pun. A pun is a word (or words) with more than one meaning.
"The pun is a form of word play that suggests two or more meanings, by exploiting multiple meanings of words, or of similar-sounding words, for an intended humorous or rhetorical effect." (Wikipedia)
The meanings of TRE-BELLE are:
1. tre + belle = three + beautiful
2. treble = high musical notesTherefore, the two meanings can be combined together to create the idea of "three beautiful women + high musical notes", which accurately describes them and what they do.
Generally, English speakers love a good pun. Personally, I think the name of this trio is very clever.
The middle belle in the photo above, Karyn Andreassend, is my step-sister!