HEllo Dick,
       Great thread . If you are used to three or four fingered up-picking its interesting to talk a bit on a few different kinds of up-picking that relate back to blue-grass banjo .. I remember you asking me in one of my guitar clips on youtube if I was using my thumb to lead the melody. Thumb lead in three finger banjo playing always leads back to conversations on Earl Scuggs . All bluegrass picking combinations come back to a kind of sped up version of the rhythms in ragtime .. :say a simple three finger roll Thumb Index Middle sped up would be a straight jig rhythm but if you break up the shape by adding an extra thumb it all becomes syncopated . as in TMITMIT OR TMITMITMITMIT . Different Banjo players have made famous using EITHER Thumb Middle or even Index fingers as their strong lead of in these rolls . Earl Sruggs for Thumb lead Don Reno liked Index lead and so on (Scruggs playing sounded a little heavier then Renos because of this)   ..I am over simplifying ...I used index finger rolls in Joy To The World in my clip of three christmas songs for banjo on youtube(I wanted Lighter attack on the melody )..
            DIck as you know I love clawhammer and I hope you get a chance to use it in some songs . Three drunken Maidens would be a good one to try in gDGBD or black-legged minor in gDGCD or Sausie Sailor Lad in dDGAD... I would make you a clip on YT of anything to be of help here . Let me know what song and what key you would like to sing it in and I will work something up for you to try . All the best , your friend in Connecticut . Guy
         
             PS I have so enjoyed your concertina and voice on youtube and would recommend all here to have a look .