We've spent the last couple classes working through the final details of A Love Like Yours and diving into Swing 48,. Theres a lot going on in 48, probably more than 48 things to swing... So lets work through this one piece at a time.
The most important thing in swing music is the Rhythm. As the song says: It don't mean a thing if it Ain't got that Swing. To get this rock steady frame work we need emphasize beats 2 & 4.
1 2 3 4 1 2 3 4 1 2 3 4 ...
this is done with a combination of really snapping through the strings (on guitars and ukes) on that strum and by dampening the chord between strums with your left hand.
For Fiddles and accordions we are going to put more emphasis on this second beat, by making it slightly longer, using more air or faster bow.
Use the Backing track above to work out some more foundation riffs and take a chance at improvising using a combination of different foundation riffs for each chord. If you want to get really fancy try playing 4 different Gm6 riffs, then 2 diff Cm6 ones...