Alright, that was pretty cool.

Just in case anybody (for some strange reason) has the same question in the future:
Code:
menu channel {
  .Title
  ..$submenu($titlealias($1))
}

alias titlealias { 
  if (% [ $+ m $+ [ $1 ] $+ _release ]) return $ifmatch : pop % [ $+ m $+ [ $1 ] $+ _name ] % [ $+ m $+ [ $1 ] $+ _size ]
}


Wims, DJ_Sol: Thank you both for the help!