diff --git a/75-aliases.zsh b/75-aliases.zsh
index 1124271..03c2c31 100644
--- a/75-aliases.zsh
+++ b/75-aliases.zsh
@@ -31,6 +31,7 @@ YDL="$HOME/bin/youtube-dl"
 [ ! -x "$YDL" ] && YDL="$(which youtube-dl)"
 if [ -x "$YDL" ]; then
 	alias ydlbest="youtube-dl --merge-output-format mkv -f 'bestvideo+bestaudio'"
+	alias ydlaudio="youtube-dl -f bestaudio"
 	alias ydl="youtube-dl --merge-output-format mkv"
 fi
 
@@ -59,3 +60,4 @@ alias -g X0='| xargs -0'
 alias -g XS='| sort | xargs'
 alias -g XS0='| sort -z | xargs -0'
 
+audio-join() ffmpeg -i "concat:${(j:|:)@[2,-1]}" -acodec copy $1