My only new focus is using an iPad Pro with my BK9 for solo sounds...
SWAM saxes are incredible compared to sampled saxes, and I really have the hots for Pianoteq8's pianos. Beautiful, dynamic, and an amazing 'Condition' slider which turns an unrealistically 'perfect' tuning into something a bit more played in, one of my pet peeves about sampled pianos. How often do we get to sit down at a piano straight after the piano technician has JUST tuned it?
Give me 30min on it, it starts to not be so perfect, and that's the sound I like!
My BK9 is 'close' to perfect, and the iPad Pro fixes any weaknesses. That's about as much extra gear as I want to haul!
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An arranger is just a tool. What matters is what you build with it..!