Well, yes, of course, you should certainly use it while you practice. have all told you to use your metronome every time you practice. You may say to me that your music teacher, band director, percussion instructor, parent, etc. My advice: Don’t play with the metronome. Well, that’s because you’re doing it wrong. Regardless, this device often seems to serve no better purpose (at least when you bother to turn it on) than to irritate you with its refusal to stay in sync with your brilliant sense of time. Or you may be the “less is more” type with a free app on your smartphone or tablet - something that’s always handy anyway. You may be “old school,” with one that swings like a pendulum from side to side. You know that annoying device that beeps incessantly, often completely out of time with your playing? You may have one the size of a book that has more knobs and switches than a soundboard.