fixed_name=$( echo "${songname,,}" | sed -e 's/^./\U&/' -e 's/- ./\U&/' )

start_name="${lower_name%% -*}"
end_name="${lower_name##*- }"

newfile="$(tr '[:upper:]' '[:lower:]' <<< "$file"  | sed -e 's/^ *./\U&/' -e 's/- *./\U&/')"

#!/bin/bash

function renamefiles {
	if [[ BASH_VERSINFO -lt 4 ]]; then
		echo "You need bash 4+ to make this script work."
		return 1
	fi

	while read PATH; do
		FILE=${PATH##*/}
		DIR=${PATH%/*}

		if [[ $FILE == *-* ]]; then
			LEFT=${FILE%%-*}
			LEFT_UPPER=${LEFT:0:1}
			LEFT_UPPER=${LEFT_UPPER^^}
			LEFT_LOWER=${LEFT:1}
			LEFT_LOWER=${LEFT_LOWER,,}
			LEFT=${LEFT_UPPER}${LEFT_LOWER}

			RIGHT=${FILE#*-}
			RIGHT_UPPER=${RIGHT:0:1}
			RIGHT_UPPER=${RIGHT_UPPER^^}
			RIGHT_LOWER=${RIGHT:1}
			RIGHT_LOWER=${RIGHT_LOWER,,}
			RIGHT=${RIGHT_UPPER}${RIGHT_LOWER}

			FILE=${LEFT}-${RIGHT}
		else
			FILE=${FILE%%-*}
			FILE_UPPER=${FILE:0:1}
			FILE_UPPER=${FILE_UPPER^^}
			FILE_LOWER=${FILE:1}
			FILE_LOWER=${FILE_LOWER,,}
			FILE=${FILE_UPPER}${FILE_LOWER}
		fi

		echo "renaming $PATH to $FILE..."

		mv "$PATH" "$DIR/$FILE" || {
			while read -t 0.2 -n 1; do continue; done  # flush keyboard buffer
			echo 'An error has occurred. Press ^C to cancel or any other key to continue.'
			read -n 1
		}
	done < <(exec find -type f -name '*.mp3')
}

renamefiles