Sixchannel.
i think the key is to keep that right hand very very relaxed and loose. ie cant tense at all.

another fast rhythm one if i remember is beatles all my loving.
i cant do that speed these days.

frankly i listen to that shads concert and marvel at the brilliant melodies. soooo many hooky riffs which i dont hear in modern songs these days in billboard top songs.
i lament the lack of memorable hooks these days.
very little on billboard cranks me up.

best
om

my songs....mixed for good earbuds...(fyi..my vocs on all songs..)
https://soundcloud.com/alfsongs
(90 songs created useing bb/rb)
(lots of tips of mine in pg tips forum.)