======================== unified (from filesystem) ========================
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                                        'duration'  '314'
                                          'artist'  'Poets of the Fall'
                                     'text_people'  'Poets of the Fall'
                                         'release'  'Alchemy, Vol. 1'
                                           'title'  'Sleep'
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                                      'lastfmtags'  ("['alternative rock', '10 of 10 stars', 'finnish', 'indie', 'rock', "
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                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '4'
                                      'tracktotal'  ''
                                            'date'  ''
                                        'comments'  ''
                                           'genre'  'eid-unsorted'
                                             'bpm'  '88.0'
                                             'key'  '1B'
                                        'acoustid'  ''
rest: ''

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'TALB' (Album/Movie/Show title)                     'Alchemy, Vol. 1'
'TBPM' (BPM (beats per minute))                     '88.0'
'TCOM' (Composer)                                   'Poets of the Fall'
'TCON' (Content type, a.k.a. Genre)                 'eid-unsorted'
'TIT2' (Title/songname/content description)         'Sleep'
'TKEY' (Initial key)                                '1B'
'TLEN' (Length)                                     '314984'
'TMED' (Media type)                                 'Digital Media'
'TPE1' (Lead performer(s)/Soloist(s))               'Poets of the Fall'
'TPE2' (Band/orchestra/accompaniment)               'Poets of the Fall'
'TPOS' (Part of a set)                              '1/1'
'TPUB' (Publisher)                                  'Insomniac'
'TRCK' (Track number/Position in set)               '4'
'TSO2'                                              'Poets of the Fall'
'TSOP' (Performer sort order)                       'Poets of the Fall'
'TXXX:Artists'                                      'Poets of the Fall'
'TXXX:Q-BUSY'                                       '3'
'TXXX:Q-CHART'                                      '3'
'TXXX:Q-GRIT'                                       '3'
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'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-PLAY'                                       '2'
'TXXX:Q-SYN'                                        '2'
'TXXX:Q-UNU'                                        '1'
'TXXX:SCRIPT'                                       'Latn'
'TXXX:TOTALTRACKS'                                  '15'
'TXXX:lastfmtags'                                   ['alternative rock',
 '10 of 10 stars',
 'finnish',
 'indie',
 'rock',
 'alternative']
'TXXX:q-bass'                                       '3'
'TXXX:q-drums'                                      '2'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '-8.94 dB'
'TXXX:replaygain_track_peak'                        '0.962410'
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========================== row from database ==========================
                                              'id'  1477939
                                            'path'  /data/Music/Bulk/00dwimp/Poets of the Fall Alchemy Vol.1 (2011)/Poets Of The Fall - 04 - Sleep.mp3
                                         'working'  None
                                         'bitrate'  320
                                    'duration_sec'  314
                                           'genre'  eid-unsorted
                                        'filesize'  12618807
                                           'mtime'  1620521038
                                   'redo_metaread'  0
                                        'rest_str'   00dwimp Vol.1 (2011) Of The 04 eid unsorted
                                      'tag_artist'  Poets of the Fall
                                     'tag_release'  Alchemy, Vol. 1
                                       'tag_title'  Sleep
                                             'bpm'  88.0
                                    'search_title'  'sleep':1
                                   'search_artist'  'fall':4 'of':2 'poets':1 'the':3
                                  'search_release'  '1':5 'alchemy':1,2 'vol':3,4
                                     'search_rest'  '00dwimp':1 '1':3 '2011':5,6 'eid':9 'of':7 'the':8 'unsorted':10 'vol':2 'vol1':4
                                    'search_combo'  '00dwimp':11 '1':10C,13 '2011':15,16 'alchemy':6C,7C 'eid':19 'fall':5B 'of':3B,17 'poets':2B 'sleep':1A 'the':4B,18 'unsorted':20 'vol':8C,9C,12 'vol1':14
                                    'tag_tracknum'  4
                                      'num_images'  1
                                             'key'  1B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-1', 'q-piano-1', 'Q-MIXBEAT-2', 'Q-OLDST-3', 'Q-GRIT-3', 'Q-UNU-1', 'Q-JZFKS-1', 'Q-CHART-3', 'q-drums-2', 'Q-SYN-2', 'q-other-3', 'Q-BUSY-3', 'Q-HAP-1', 'Q-PLAY-2', 'q-bass-3']
                                      'lastfmtags'  ['alternative rock', '10 of 10 stars', 'finnish', 'indie', 'rock', 'alternative']
                                        'tag_date'  
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620521038.3174505  (2021-05-09 02:43:58)
                             'size'  12618807