When my students are working on the tremolo technique they often ask for musical examples, here is one that makes it easy for the left hand, the right hand still has to do it's thing to make the tremolo flow. The chords are Dm, Am, and C, as always, start slow and even, increase the speed only when you can keep the tremolo sounding smooth. This passage is the second part of "Vignette Four", listen to it atVignette Four This passage starts at about the 20 second mark.