I am kind of thinking a workstation with sequenced music would give you a much broader landscape of capabilities than any Arranger...

The Kronos with Karma technology I played on Saturday would give you plently of options.....

Just a thought
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Steve A http://www.stevealtonian.com
Korg Pa4x 76...TASCAM DP24 & DP24 SD. Studio One 6 Professional with a FADER PORT 16. 1969 Yamaha FG-300 Yamaha Red Label Nippon Gakki. Breedlove American CME 25. Neumann TLM-49