Up to the Mountain by Patty Griffin inspired by words from a Martin Luther King Speech.  This is in both the original key of B and also in the key of C.  This is a great work for a Martin Luther King celebration.  The horns are simple and have subtle gospel feel and also capture some of the string lines in the original version.  This could be performed with or out without drums.  Be sure to listen to the midi audio of this arrangement and check out sample score pages.  Look for other versions of this song here on this web site.