Beethoven's 9th Symphony

I encountered this when listening to RadioLabs from WNYC.  This is Beethoven's 9th Symphony (which usually lasts about an hour) stretched out to last 24 hours.  The high movement and fast pace of the musical piece is quickly removed and is replaced with a melodious musical arrangement which I have been using for prayer and meditation.

On a similar "note", the entire site of is worth your time to just explore what people are doing with music around them.