Man!  What ever happened to Sequential Circuits?  The Sequential Circuits Prohphet 5 was cool!  What I remember most about this keyboard was punchy brass sounds.  Brass not being the key word here.. but PUNCH!  I never owned one so I might be a little out of line.  I understand they were not the easiest keyboards to work with.  But soundfonts are!  In this file I have 19 sounds (unfortunately.. none are brass).  Click on the Prophet 5 to download the file.