Code:
chmod: /home/share/music/mp3/151/Code_Of_Tha_Street_[2003]/*: No such file or directory
[2003] is a shell regular expression: It means in this case the sequence of characters :"Code_Of_Tha_Street_" followed by either a digit 2, or a digit 0, or a digit 3.
You will have to escape the "[" with a "\" to make it a literal '[' and not the start of a shell "[ ..... ]" regular expression.