#!/sbin/sh

case "$(echo "$1" | rev | cut -d'.' -f1 | rev)" in
  "mp3") mid3v2 -l "$1" | awk 'xor(/^TPE1/,/^TALB/) {printf (NR%2==0) ? $0 "\n" : $0 "|"}' | sed 's/TPE1=//;s/TALB=//' ;;
  "ogg") echo "ogg" ;;
  "*") echo "Unknown type" ;;
esac