The most common and most likely answer to this crossword clue is the 5 letter word ELVIS
E
L
V
I
S
More clues leading to the result ELVIS
- The King distributed silver no end
- Former singer, English, is about fifty five
- The King’s fabulous speech, failing to finish
- The Spanish sextet’s famous singer
- Rocker frame attached to legs cut from piano
- The King's trousers needing length let down a bit
- The King of fabulous creatures has no horse
- The King of the Spanish taking victory over islands
- Tolkien’s language not hard, reveals the King
- The King of the Fairies with onset of idea for drug
Buddy explains!

The straight part
We know that "famous singer" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case famous singer = elvis.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.