======================== unified (from filesystem) ========================
                                         'bitrate'  '191.977'
                                        'duration'  '214'
                                          'artist'  'In-Grid'
                                     'text_people'  ''
                                         'release'  'Rendez-vous'
                                           'title'  'In-tango'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-UNU-1', 'Q-OLDST-3', 'Q-HHRNBTT-1', "
 "'Q-LOCALNESS-3', 'q-syn-2', 'q-bass-1', 'q-busy-3', 'q-grit-2', 'q-play-2', "
 "'q-chart-2', 'q-drums-4', 'q-other-2', 'q-piano-1', 'q-vocals-2', "
 "'q-mixbeat-2']")
                                      'lastfmtags'  "['dance', 'electronic', 'female vocalists', 'pop', 'french']"
                                     'discogstags'  "['electronic', 'pop', 'house']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '1'
                                      'tracktotal'  ''
                                            'date'  '2003'
                                        'comments'  ''
                                           'genre'  'electronic-unsorted'
                                             'bpm'  '132.098'
                                             'key'  '7B'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Rendez-vous'
'TBPM' (BPM (beats per minute))                     '132.098'
'TCON' (Content type, a.k.a. Genre)                 'electronic-unsorted'
'TDRC' (Recording time)                             '2003'
'TIT2' (Title/songname/content description)         'In-tango'
'TKEY' (Initial key)                                '7B'
'TPE1' (Lead performer(s)/Soloist(s))               'In-Grid'
'TRCK' (Track number/Position in set)               '1'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '3'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  ['electronic', 'pop', 'house']
'TXXX:lastfmtags'                                   ['dance', 'electronic', 'female vocalists', 'pop', 'french']
'TXXX:original release date'                        ['2003', '2003']
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '2'
'TXXX:q-other'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '2'
'TXXX:replaygain_track_gain'                        '+10.21 dB'
'TXXX:replaygain_track_peak'                        '0.111917'

========================== row from database ==========================
                                              'id'  1320631
                                            'path'  /data/Music/Bulk/00poprockelectronic/Unsorted/[loose files]/In-Grid_-_In_Tango_(dance_mix).mp3
                                         'working'  None
                                         'bitrate'  191
                                    'duration_sec'  214
                                           'genre'  electronic-unsorted
                                        'filesize'  5160051
                                           'mtime'  1621630227
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic Unsorted [loose files] Grid_ _In_Tango_(dance_mix) electronic unsorted
                                      'tag_artist'  In-Grid
                                     'tag_release'  Rendez-vous
                                       'tag_title'  In-tango
                                             'bpm'  132.098
                                    'search_title'  'in':1 'intango':3 'tango':2
                                   'search_artist'  'grid':2 'in':1 'ingrid':3
                                  'search_release'  'rendez':1 'rendezvous':3 'vous':2
                                     'search_rest'  '00poprockelectronic':1 'dance':10,14 'electronic':16 'files':5,6 'grid':7 'in':8,12 'loose':3,4 'mix':11,15 'tango':9,13 'unsorted':2
                                    'search_combo'  '00poprockelectronic':10 'dance':19,23 'electronic':25 'files':14,15 'grid':5B,16 'in':1A,4B,17,21 'ingrid':6B 'intango':3A 'loose':12,13 'mix':20,24 'rendez':7C 'rendezvous':9C 'tango':2A,18,22 'unsorted':11 'vous':8C
                                    'tag_tracknum'  1
                                      'num_images'  0
                                             'key'  7B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-2', 'Q-LOCALNESS-3', 'q-piano-1', 'q-mixbeat-2', 'q-play-2', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-4', 'q-syn-2', 'q-chart-2', 'q-other-2', 'Q-HAP-3', 'q-bass-1', 'q-grit-2']
                                      'lastfmtags'  ['dance', 'electronic', 'female vocalists', 'pop', 'french']
                                        'tag_date'  2003
                                     'discogstags'  ['electronic', 'pop', 'house']

============================== file details ==============================
                                           'mtime'  1621630227.111072  (2021-05-21 22:50:27)
                             'size'  5160051