======================== unified (from filesystem) ========================
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                                        'duration'  '139'
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                             'musicbrainz_albumid'  ''
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                                      'tracktotal'  '14'
                                            'date'  '1998'
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'TDOR' (Original release time)                      '1998'
'TDRC' (Recording time)                             '1998'
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'TKEY' (Initial key)                                '12B'
'TMED' (Media type)                                 'CD'
'TPE1' (Lead performer(s)/Soloist(s))               'Buddy Love'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TPOS' (Part of a set)                              '1/1'
'TPUB' (Publisher)                                  'Born Bad Records'
'TRCK' (Track number/Position in set)               '1/14'
'TSO2'                                              'Various Artists'
'TSOP' (Performer sort order)                       'Love, Buddy'
'TXXX:Acoustid Id'                                  'cd154390-1c5d-43c6-ae28-0abf4b6021ad'
'TXXX:Artists'                                      'Buddy Love'
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'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
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'TXXX:lastfmtags'                                   ['rockabilly', 'power pop', 'powerpop', 'rock', 'classic rock']
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'TXXX:q-piano'                                      '1'
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========================== row from database ==========================
                                              'id'  1420023
                                            'path'  /data/Music/Bulk/00popandrock-punk-garage-surf-stoner/va - Born Bad Vol. 4/01 Heartbreak Hotel.mp3
                                         'working'  None
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                                    'duration_sec'  139
                                           'genre'  rock-gr-garage
                                        'filesize'  2884373
                                           'mtime'  1620388632
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                                     'tag_release'  Born Bad, Volume 4
                                       'tag_title'  Heartbreak Hotel
                                             'bpm'  115.987
                                    'search_title'  'heartbreak':1 'hotel':2
                                   'search_artist'  'buddy':1 'love':2
                                  'search_release'  '4':5 'bad':2,3 'born':1 'volume':4
                                     'search_rest'  'garage':2 'gr':9 'punk':1 'rock':8 'stoner':4 'surf':3 'va':5 'vol':6,7
                                    'search_combo'  '4':9C 'bad':6C,7C 'born':5C 'buddy':3B 'garage':11 'gr':18 'heartbreak':1A 'hotel':2A 'love':4B 'punk':10 'rock':17 'stoner':13 'surf':12 'va':14 'vol':15,16 'volume':8C
                                    'tag_tracknum'  1
                                      'num_images'  1
                                             'key'  12B
                                           '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-4', 'q-syn-2', 'q-chart-1', 'q-other-3', 'Q-HAP-2', 'q-bass-2', 'q-grit-2']
                                      'lastfmtags'  ['rockabilly', 'power pop', 'powerpop', 'rock', 'classic rock']
                                        'tag_date'  1998
                                     'discogstags'  ['rock & roll', 'rock', 'garage rock']

============================== file details ==============================
                                           'mtime'  1620388632.10656  (2021-05-07 13:57:12)
                             'size'  2884373