======================== unified (from filesystem) ========================
                                         'bitrate'  '127.706'
                                        'duration'  '396'
                                          'artist'  'Dream Theater'
                                     'text_people'  'Liquid Tension Experiment'
                                         'release'  'Progsoup 29'
                                           'title'  'Acid Rain'
                                           'quals'  ("['Q-HAP-3', 'Q-UNU-2', 'Q-JZFKS-1', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-2', 'q-syn-2', 'q-bass-3', 'q-busy-3', 'q-grit-2', 'q-play-3', "
 "'q-chart-2', 'q-drums-4', 'q-other-3', 'q-piano-1', 'q-vocals-1', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['metal', 'progressive rock', 'progressive metal', 'progressive', 'rock']"
                                     'discogstags'  "['rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '45'
                                      'tracktotal'  ''
                                            'date'  '1999'
                                        'comments'  ''
                                           'genre'  'rock-cppex-progressive;set-pl-progspace'
                                             'bpm'  '145.163'
                                             'key'  '10A'
                                        'acoustid'  ''
rest: ''

======================== rawer (from filesystem) ========================

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'TALB' (Album/Movie/Show title)                     'Progsoup 29'
'TBPM' (BPM (beats per minute))                     '145.163'
'TCOM' (Composer)                                   'Liquid Tension Experiment'
'TCON' (Content type, a.k.a. Genre)                 ['rock-cppex-progressive', 'set-pl-progspace']
'TDRC' (Recording time)                             '1999'
'TIT2' (Title/songname/content description)         'Acid Rain'
'TKEY' (Initial key)                                '10A'
'TPE1' (Lead performer(s)/Soloist(s))               'Dream Theater'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TPUB' (Publisher)                                  'Magna Carta'
'TRCK' (Track number/Position in set)               '45'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-UNU'                                        '2'
'TXXX:discogstags'                                  'rock'
'TXXX:lastfmtags'                                   ['metal', 'progressive rock', 'progressive metal', 'progressive', 'rock']
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '-1.30 dB'
'TXXX:replaygain_track_peak'                        '0.464107'

========================== row from database ==========================
                                              'id'  1412092
                                            'path'  /data/Music/Bulk/00popandrock-classicprogpsy/PROGSOUP/progsoup 29/1656 liquid tension -  acid rain.mp3
                                         'working'  None
                                         'bitrate'  127
                                    'duration_sec'  396
                                           'genre'  rock-cppex-progressive;set-pl-progspace
                                        'filesize'  6335564
                                           'mtime'  1620737078
                                   'redo_metaread'  0
                                        'rest_str'   00popandrock classicprogpsy PROGSOUP progsoup 1656 liquid tension acid rain rock cppex progressive;set pl progspace
                                      'tag_artist'  Dream Theater
                                     'tag_release'  Progsoup 29
                                       'tag_title'  Acid Rain
                                             'bpm'  145.163
                                    'search_title'  'acid':1 'rain':2
                                   'search_artist'  'dream':1 'theater':2
                                  'search_release'  '29':2 'progsoup':1
                                     'search_rest'  '1656':3 'acid':6 'classicprogpsy':1 'cppex':9 'liquid':4 'pl':14 'progressive':10,12 'progsoup':2 'progspace':15 'rain':7 'rock':8 'set':11,13 'tension':5
                                    'search_combo'  '1656':9 '29':6C 'acid':1A,12 'classicprogpsy':7 'cppex':15 'dream':3B 'liquid':10 'pl':20 'progressive':16,18 'progsoup':5C,8 'progspace':21 'rain':2A,13 'rock':14 'set':17,19 'tension':11 'theater':4B
                                    'tag_tracknum'  45
                                      'num_images'  0
                                             'key'  10A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-3', 'Q-OLDST-2', 'Q-UNU-2', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-4', 'q-syn-2', 'q-chart-2', 'q-other-3', 'Q-HAP-3', 'q-bass-3', 'q-grit-2']
                                      'lastfmtags'  ['metal', 'progressive rock', 'progressive metal', 'progressive', 'rock']
                                        'tag_date'  1999
                                     'discogstags'  ['rock']

============================== file details ==============================
                                           'mtime'  1620737077.7716677  (2021-05-11 14:44:37)
                             'size'  6335564