I also just started the tremolo thingy... I use Both PAMI and PIMA...
and when I'm practising I do PAMI on one string (e) very slow and hard and in staccato... you'll find this boring.. but if you do it every day, there is progress... also do PIMAMI (it's more spanish but very cool to do :D )
(sorry my english)
there is now way I ever play this, sorry...
edit: I'm more the at the romantic composition.. I really can't understand the abstractness in new music pieces...
uh scary,, this string quartet really makes me angry somehow.. . it reminds me of some kronos quartet and Kimmo Pohjonen I heard for some days ago... they had some guy with virtual drums... this could easily be made for that purpose... !!