First some background:
I built my own bass kalimba (see photos below and plans at http://www.dennishavlena.com/bk.htm), which is like placing seven monster Jew's Harps on top of a 1/4" plywood box the size of a laundry basket. Surprisingly, it sounds very much like a string bass when mixed with other instruments. My hat's off to all of you 'real' bass players, for your dedication in learning and your investment in your instrument(s) - I am afraid that my station in life does not permit either, but I sure respect you!
But I can make music with this box, and jammed with a few groups last night at the Floyd Jamboree in SW Virginia - a Mecca for bluegrass on Friday nights (I counted eight informal groups on the street outside the official concert). This instrument plays only the discrete notes of A B C D E F & G, though tuned in a Circle of Fifths for faster learning. It has some overtones which preclude any solos, but I'm happy with proving the backdrop. 'Thrilled' might be a better word.
I was told by one of the fiddlers in the group that it was important that I hit my notes just BEFORE the beat, so the sound would be generated to arrive at the time of the true beat.
Questions:
* Is he right with respect to string basses? As in, do bassists actually do this? I know that tuba players have to start a half-note early so this is plausible, and as the fellow certainly was a fine musician I'm afraid he probably knew what he was talking about.
* How in the world does one do this? I can walk and chew gum, but trying to anticipate the beat by a hair proved impossible for me last night. And worse, how does one LEARN to do this?
* Can one/should one try to measure the effect? If so, how? I'm wondering, for instance, if he might have been mistaking hesitancy on my part for the effect (I'm still new at this), and the oddball instrument I have may or may not actually exhibit this problem. Too, if I'm trying to learn, I could see my progress more objectively if I could measure it.
Thoughts? Thanks in advance.
23" wide x 16.5" deep x 11.5" high; 1/4 ply, 1/4 round reinforcements, glued; lumber strapping material for tines

Church picnic - my debut (about 24 hours after the tuning it for the first time)

