Writing a song with a length over ten minutes is a masterpiece of creativity. It requires a magical driving force within the song itself that keeps the attention of the listener. These lengthy songs can be found typically in genres like jazz and symphonic rock. One of my favourites is Shringar by Shakti featuring John McLaughlin. The beautiful song clocks in at 26:38. More recent is Junior dad by Lou Reed and Metallica from the CD Lulu, crowned the worst rock CD ever. The song (19:29) however surely has this mysterious and magical driving force (and maybe the only good song on a failed album). A master of lengthy songs is Bob Dylan. Listen to songs like ‘Cross the green mountains (8:10), Brownsville girl (11:00) that saved Knocked out loaded and Desolation row (11:21). Highlands tops the list with a length of 16:30.
For mind mappers: I get many questions how to make graphs using mind map software. The trick is to use a grid in the background. Normally I remove it once the graph is made, I kept it in the graph to show how it is done. By drawing a branch back and forth you can make the line as thick as you like.