How I play the double bass: 3 exercises to strengthen your left hand and improve your intonation

Hello my friends! Today I'm going to show you the three exercises I use to keep my left hand fit and my intonation accurate. They're three efficient, no-fuss short excerpts from Franco Petracchi's book "Simplified higher technique", which won't take too much of your time and will boost your technique dramatically. Enjoy!
Petracchi's book: smile.amazon.c...
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