======================== unified (from filesystem) ========================
                                         'bitrate'  '320.0'
                                        'duration'  '181'
                                          'artist'  'Joni Mitchell'
                                     'text_people'  'Joni Mitchell'
                                         'release'  'For the Roses'
                                           'title'  'Electricity'
                                           'quals'  ("['Q-HAP-2', 'Q-JZFKS-3', 'Q-LOCALNESS-1', 'Q-UNU-1', 'Q-OLDST-2', "
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                                      'lastfmtags'  "['acoustic', 'canadian', 'female vocalists', 'folk', 'singer songwriter']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '8'
                                      'tracktotal'  ''
                                            'date'  '1972'
                                        'comments'  ''
                                           'genre'  'ifs-songwriter-folk;ifs-songwriter-eos'
                                             'bpm'  '105.753'
                                             'key'  '1B'
                                        'acoustid'  ''
rest: ''

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'TALB' (Album/Movie/Show title)                     'For the Roses'
'TBPM' (BPM (beats per minute))                     '105.753'
'TCOM' (Composer)                                   'Joni Mitchell'
'TCON' (Content type, a.k.a. Genre)                 ['ifs-songwriter-folk', 'ifs-songwriter-eos']
'TDRC' (Recording time)                             '1972'
'TIT2' (Title/songname/content description)         'Electricity'
'TKEY' (Initial key)                                '1B'
'TLEN' (Length)                                     '181600'
'TPE1' (Lead performer(s)/Soloist(s))               'Joni Mitchell'
'TPE2' (Band/orchestra/accompaniment)               'Joni Mitchell'
'TPUB' (Publisher)                                  'Asylum'
'TRCK' (Track number/Position in set)               '8'
'TXXX:Q-HAP'                                        '2'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '3'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['acoustic', 'canadian', 'female vocalists', 'folk', 'singer songwriter']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '2'
'TXXX:q-chart'                                      '3'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+2.43 dB'
'TXXX:replaygain_track_peak'                        '0.494285'

========================== row from database ==========================
                                              'id'  173719
                                            'path'  /data/Music/Bulk/00singer-songwriter-eos/Joni Mitchell/1972 - For the Roses/08-Electricity.mp3
                                         'working'  None
                                         'bitrate'  320
                                    'duration_sec'  181
                                           'genre'  ifs-songwriter-folk;ifs-songwriter-eos
                                        'filesize'  7261196
                                           'mtime'  1636400336
                                   'redo_metaread'  0
                                        'rest_str'   00singer songwriter eos 1972 08 ifs songwriter folk;ifs songwriter eos
                                      'tag_artist'  Joni Mitchell
                                     'tag_release'  For the Roses
                                       'tag_title'  Electricity
                                             'bpm'  105.753
                                    'search_title'  'electricity':1
                                   'search_artist'  'joni':1 'mitchell':2
                                  'search_release'  'for':1 'roses':3 'the':2
                                     'search_rest'  '00singer':1 '1972':4 'eos':3 'folk':6,8 'ifs':5,7,9 'songwriter':2
                                    'search_combo'  '00singer':7 '1972':10 'electricity':1A 'eos':9 'folk':12,14 'for':4C 'ifs':11,13,15 'joni':2B 'mitchell':3B 'roses':6C 'songwriter':8 'the':5C
                                    'tag_tracknum'  8
                                      'num_images'  0
                                             'key'  1B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-3', 'Q-OLDST-2', 'Q-UNU-1', 'Q-JZFKS-3', 'q-busy-2', 'q-drums-1', 'q-syn-1', 'q-chart-3', 'q-other-2', 'Q-HAP-2', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['acoustic', 'canadian', 'female vocalists', 'folk', 'singer songwriter']
                                        'tag_date'  1972
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1636400336.329808  (2021-11-08 20:38:56)
                             'size'  7261196