======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '137'
                                          'artist'  'The Brian Setzer Orchestra'
                                     'text_people'  ''
                                         'release'  'Vavoom (Bonus Disc)'
                                           'title'  'Crazy Little Thing Called Love'
                                           'quals'  ("['Q-HAP-3', 'Q-UNU-1', 'Q-JZFKS-1', 'Q-OLDST-2', 'Q-HHRNBTT-1', "
 "'Q-LOCALNESS-1', 'q-syn-2', 'q-bass-3', 'q-busy-3', 'q-grit-2', 'q-play-2', "
 "'q-chart-3', 'q-drums-4', 'q-other-2', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['jazz', 'big band', 'rock', 'rockabilly', 'swing']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '02'
                                      'tracktotal'  ''
                                            'date'  '2000'
                                        'comments'  ''
                                           'genre'  'rock-rockabilly or psychobilly'
                                             'bpm'  '88.015'
                                             'key'  '10A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Vavoom (Bonus Disc)'
'TBPM' (BPM (beats per minute))                     '88.015'
'TCON' (Content type, a.k.a. Genre)                 'rock-rockabilly or psychobilly'
'TDRC' (Recording time)                             '2000'
'TIT2' (Title/songname/content description)         'Crazy Little Thing Called Love'
'TKEY' (Initial key)                                '10A'
'TPE1' (Lead performer(s)/Soloist(s))               'The Brian Setzer Orchestra'
'TRCK' (Track number/Position in set)               '02'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['jazz', 'big band', 'rock', 'rockabilly', 'swing']
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '3'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '+0.22 dB'
'TXXX:replaygain_track_peak'                        '0.445534'

========================== row from database ==========================
                                              'id'  675540
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/Brian Setzer Orchestra/MBZ;#The Brian Setzer Orchestra;#Vavoom (Bonus Disc);#02;#Crazy Little Thing Called Love.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  137
                                           'genre'  rock-rockabilly or psychobilly
                                        'filesize'  2197902
                                           'mtime'  1620525125
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country MBZ;#The Orchestra;#Vavoom Disc);#02;#Crazy rock rockabilly or psychobilly
                                      'tag_artist'  The Brian Setzer Orchestra
                                     'tag_release'  Vavoom (Bonus Disc)
                                       'tag_title'  Crazy Little Thing Called Love
                                             'bpm'  88.015
                                    'search_title'  'called':4 'crazy':1 'little':2 'love':5 'thing':3
                                   'search_artist'  'brian':2 'orchestra':4 'setzer':3 'the':1
                                  'search_release'  'bonus':2,3 'disc':4,5 'vavoom':1
                                     'search_rest'  '02':14,17 'country':4 'crazy':15,18 'disc':13,16 'exotica':2 'jazz':1 'mbz':5,7 'oldies':3 'or':21 'orchestra':9,11 'psychobilly':22 'rock':19 'rockabilly':20 'the':6,8 'vavoom':10,12
                                    'search_combo'  '02':28,31 'bonus':11C,12C 'brian':7B 'called':4A 'country':18 'crazy':1A,29,32 'disc':13C,14C,27,30 'exotica':16 'jazz':15 'little':2A 'love':5A 'mbz':19,21 'oldies':17 'or':35 'orchestra':9B,23,25 'psychobilly':36 'rock':33 'rockabilly':34 'setzer':8B 'the':6B,20,22 'thing':3A 'vavoom':10C,24,26
                                    'tag_tracknum'  2
                                      'num_images'  0
                                             'key'  10A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-2', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-4', 'q-syn-2', 'q-chart-3', 'q-other-2', 'Q-HAP-3', 'q-bass-3', 'q-grit-2']
                                      'lastfmtags'  ['jazz', 'big band', 'rock', 'rockabilly', 'swing']
                                        'tag_date'  2000
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620525125.147662  (2021-05-09 03:52:05)
                             'size'  2197902