For a beginner, 15-20 minutes 5 days is sufficient. Once you build vocal stamina after a few months you can practice up to 2 hours a day. WORK HARD. PRODUCE RESULTS
At the minimum, you must practice daily your current song that is being taught, the last song that was taught and the other pieces that are applicable for your current grade examination, if you are...
Only when you want to meditate Answer You can increase your flexibility if you do it more often--BUT be sure to crosstrain, that is, to vary your routine so that you do not cause injury due to...