Dennis, The Roland RA800 is a great table top arranger, modeled after the 76 key G800..It has great features including a SMF playback...The sounds are very good..
I used one for a couple years with my XP80[76 keys]...The unit is a little large but makes it easy to use..

It also has lyrics read out with embedded sequences..

They are hard to find, and a good alternative if you are looking for something to go along with your favorite keyboard..