======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '189'
                                          'artist'  'Motörhead'
                                     'text_people'  ''
                                         'release'  'Ace of Spades'
                                           'title'  '(We Are) the Road Crew'
                                           'quals'  ("['Q-LOCALNESS-1', 'Q-UNU-2', 'Q-JZFKS-1', 'Q-HAP-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-3', 'q-syn-2', 'q-bass-1', 'q-busy-3', 'q-grit-4', 'q-play-3', "
 "'q-chart-3', 'q-drums-3', 'q-other-4', 'q-piano-1', 'q-vocals-2', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['speed metal', 'hard rock', 'metal', 'rock', 'heavy metal']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1980'
                                        'comments'  ''
                                           'genre'  'eid-metal-heavy'
                                             'bpm'  '134.6'
                                             'key'  '1A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Ace of Spades'
'TBPM' (BPM (beats per minute))                     '134.6'
'TCON' (Content type, a.k.a. Genre)                 'eid-metal-heavy'
'TDRC' (Recording time)                             '1980'
'TIT2' (Title/songname/content description)         '(We Are) the Road Crew'
'TKEY' (Initial key)                                '1A'
'TPE1' (Lead performer(s)/Soloist(s))               'Motörhead'
'TXXX:Q-HAP'                                        '1'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '2'
'TXXX:lastfmtags'                                   ['speed metal', 'hard rock', 'metal', 'rock', 'heavy metal']
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '3'
'TXXX:q-drums'                                      '3'
'TXXX:q-grit'                                       '4'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '4'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '2'
'TXXX:replaygain_track_gain'                        '-1.11 dB'
'TXXX:replaygain_track_peak'                        '0.494412'

========================== row from database ==========================
                                              'id'  1396797
                                            'path'  /data/Music/Bulk/00dwimp/00metal/Motörhead - Motorhead/Ace Of Spades/Mot_rhead - (We Are) the Road Crew.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  189
                                           'genre'  eid-metal-heavy
                                        'filesize'  3032960
                                           'mtime'  1620311085
                                   'redo_metaread'  0
                                        'rest_str'   00dwimp 00metal Motorhead Of Mot_rhead eid metal heavy
                                      'tag_artist'  Motörhead
                                     'tag_release'  Ace of Spades
                                       'tag_title'  (We Are) the Road Crew
                                             'bpm'  134.6
                                    'search_title'  'are':3,4 'crew':7 'road':6 'the':5 'we':1,2
                                   'search_artist'  'motorhead':1,2
                                  'search_release'  'ace':1 'of':2 'spades':3
                                     'search_rest'  '00dwimp':1 '00metal':2 'eid':7 'heavy':9 'metal':8 'mot':5 'motorhead':3 'of':4 'rhead':6
                                    'search_combo'  '00dwimp':13 '00metal':14 'ace':10C 'are':3A,4A 'crew':7A 'eid':19 'heavy':21 'metal':20 'mot':17 'motorhead':8B,9B,15 'of':11C,16 'rhead':18 'road':6A 'spades':12C 'the':5A 'we':1A,2A
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  1A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-2', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-3', 'Q-OLDST-3', 'Q-UNU-2', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-3', 'q-syn-2', 'q-chart-3', 'q-other-4', 'Q-HAP-1', 'q-bass-1', 'q-grit-4']
                                      'lastfmtags'  ['speed metal', 'hard rock', 'metal', 'rock', 'heavy metal']
                                        'tag_date'  1980
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620311084.558743  (2021-05-06 16:24:44)
                             'size'  3032960