I Ponder A Vermonter (short quips suitable for future expansion)
When someone has a good singing voice, they are often said to have the voice of an angel. But is that a compliment? Angels usually had to say fear not, and their voice probably more like a brassy trumpet of God than something musical.
At The Rainbow 
One response to “Compliment or Not?”
A very astute observation. Most of the things we believe about angels comes from apocryphal writings and not scriptural canon.
In a brief search of canon I could find no record of angels singing, canon usually records them saying, praising or speaking but avoids using the term singing. For example;
“At the sound of their voices the doorposts and thresholds shook and the temple was filled with smoke.”
Isaiah 6:4 NIV
https://bible.com/bible/111/isa.6.4.NIV
As to the constant “Fear Not” used by angels this probably due more to the Glory of God which came with the angels than the angels themselves. We read that Moses had to veil his face from the people after a brief time in the presence of God’s glory. Angels unless dispatched are forever in God’s glory and it comes with them when dispatched. As a case in point :
“An angel of the Lord appeared to them, and the glory of the Lord shone around them, and they were terrified.”
Luke 2:9 NIV
https://bible.com/bible/111/luk.2.9.NIV
So while “you have the voice of an angel” is a well meaning compliment, it has no basis in canon and is about as good as “Bless your Heart” so often used in the Bible Belt.