The Music Analyzer gives you five numbers about your track. Once you know what they mean, you can spot a mix problem in about ten seconds.
Peak vs. RMS vs. crest factor
Peak is the loudest single sample. RMS is the average energy. Crest factor is the gap between them. A healthy modern mix lives around 10–14 dB of crest. Below 6 dB means you've flattened it so hard the life is gone. Above 20 dB means the perceived loudness will feel weak next to commercial releases.
Band energy balance
The low/mid/high percentages tell you where the energy lives. A bass-forward mix skews low. A radio-ready pop mix is usually balanced with a slight mid emphasis. If you're ~65% high, you probably have too much cymbal or sibilance.
The energy timeline
The 48-bucket timeline is your crash-check for arrangement. If the second chorus doesn't read visibly louder than the first, your arrangement isn't lifting. Fix it before mixing.