There are arguments on both sides. Whether they're convincing is shown in the aftermath.
Have you ever recorded your practice then listened to it? You'd probably hear that the things you do well are played at one tempo and the things that need work have a slower tempo. If you aren't aware of it the metronome exposes it. Practice/record minus metronome then fire up the metronome during playback for comparison.
Now, playing in ensemble there'll be tempo variations that are appropriate to the tune as your band has arranged it. Metronomes don't do rubato sections at all well nor do they get along with fermatas. As with any tool there are times when it's right and times when it's wrong. Many teachers consider it a "must use" while some others subscribe to JB's "absolutely not" so pick your guru.
Have you ever recorded your practice then listened to it? You'd probably hear that the things you do well are played at one tempo and the things that need work have a slower tempo. If you aren't aware of it the metronome exposes it. Practice/record minus metronome then fire up the metronome during playback for comparison.
Now, playing in ensemble there'll be tempo variations that are appropriate to the tune as your band has arranged it. Metronomes don't do rubato sections at all well nor do they get along with fermatas. As with any tool there are times when it's right and times when it's wrong. Many teachers consider it a "must use" while some others subscribe to JB's "absolutely not" so pick your guru.
