One of the things I do, to help get an accurate tap tempo input (it's not going to work well if you are unsteady yourself!) is to do the old drummer type count-in technique - you know, where he goes 1--2--1-2-3-4 - and I tap the panel next to the Tap button for the 1--2--, and THEN hit the Tap Tempo button on the 1-2-3-4. It helps me steady up before I start tapping, and feels like a natural count-in.

Try it, and see if it helps......

If you still feel that things are not working right (the tempo isn't what you tapped in), you may not be alone. I always felt the G1000s tap tempo did not work very well, giving inconsistent results, but have been pleasantly surprised at how well it works on the G70. So hardware DOES make a difference.

Here's a little test you can do to see if your tap tempo function is consistent........ Start tapping on the panel NEXT to your Tap Button until you have settled down to a steady rhythm. Now keep the rhythm up and hit the tap button 4 times - then go back to tapping on the panel, all in rhythm. Keep tapping - now look at the tempo readout - keep tapping - then hit the tap button four times again - keep tapping! - see if the tempo readout changes - do it all over again...........

If your tempo readout fluctuates by more than a beat or two a minute (providing you keep tapping steadily), your arranger may have hardware/software issues that make this feature unreliable. I know this feature got improved in the G70, so perhaps your tapping isn't to blame when things don't start at the tempo you THOUGHT you were tapping at........
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An arranger is just a tool. What matters is what you build with it..!