======================== unified (from filesystem) ========================
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                                        'duration'  '274'
                                          'artist'  'Nicholas Goluses'
                                     'text_people'  'Johann Sebastian Bach'
                                         'release'  'Bach: Sonatas Transcribed for Guitar'
                                           'title'  'Sonata for solo violin No. 1 in G minor, BWV 1001: Presto'
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                                      'lastfmtags'  "['classical guitar', 'baroque era']"
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                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '4'
                                      'tracktotal'  ''
                                            'date'  '1995'
                                        'comments'  ''
                                           'genre'  'loc-unsorted'
                                             'bpm'  '124.852'
                                             'key'  '7A'
                                        'acoustid'  ''
rest: ''

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'TALB' (Album/Movie/Show title)                     'Bach: Sonatas Transcribed for Guitar'
'TBPM' (BPM (beats per minute))                     '124.852'
'TCOM' (Composer)                                   'Johann Sebastian Bach'
'TCON' (Content type, a.k.a. Genre)                 'loc-unsorted'
'TDRC' (Recording time)                             '1995'
'TIT2' (Title/songname/content description)         'Sonata for solo violin No. 1 in G minor, BWV 1001: Presto'
'TKEY' (Initial key)                                '7A'
'TPE1' (Lead performer(s)/Soloist(s))               'Nicholas Goluses'
'TPE2' (Band/orchestra/accompaniment)               'Nicholas Goluses'
'TPUB' (Publisher)                                  'Naxos'
'TRCK' (Track number/Position in set)               '4'
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'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['classical guitar', 'baroque era']
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'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '+0.82 dB'
'TXXX:replaygain_track_peak'                        '1.176530'

========================== row from database ==========================
                                              'id'  965023
                                            'path'  /data/Music/Bulk/00localcharacter/HAROLD/04 - bach - sonata no. 1 in g minor, bwv 1001  4  presto.mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  274
                                           'genre'  loc-unsorted
                                        'filesize'  6585585
                                           'mtime'  1620400963
                                   'redo_metaread'  0
                                        'rest_str'   00localcharacter HAROLD 04 bach sonata no. g bwv 4 presto loc unsorted
                                      'tag_artist'  Nicholas Goluses
                                     'tag_release'  Bach: Sonatas Transcribed for Guitar
                                       'tag_title'  Sonata for solo violin No. 1 in G minor, BWV 1001: Presto
                                             'bpm'  124.852
                                    'search_title'  '1':7 '1001':13,14 'bwv':12 'for':2 'g':9 'in':8 'minor':10,11 'no':5,6 'presto':15 'solo':3 'sonata':1 'violin':4
                                   'search_artist'  'goluses':2 'nicholas':1
                                  'search_release'  'bach':1,2 'for':5 'guitar':6 'sonatas':3 'transcribed':4
                                     'search_rest'  '4':8 'bach':2 'bwv':7 'g':6 'harold':1 'loc':10 'no':4,5 'presto':9 'sonata':3 'unsorted':11
                                    'search_combo'  '1':7A '1001':13A,14A '4':31 'bach':18C,19C,25 'bwv':12A,30 'for':2A,22C 'g':9A,29 'goluses':17B 'guitar':23C 'harold':24 'in':8A 'loc':33 'minor':10A,11A 'nicholas':16B 'no':5A,6A,27,28 'presto':15A,32 'solo':3A 'sonata':1A,26 'sonatas':20C 'transcribed':21C 'unsorted':34 'violin':4A
                                    'tag_tracknum'  4
                                      'num_images'  0
                                             'key'  7A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-2', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-1', 'q-syn-1', 'q-chart-2', 'q-other-4', 'q-bass-1', 'q-grit-2']
                                      'lastfmtags'  ['classical guitar', 'baroque era']
                                        'tag_date'  1995
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620400962.5463305  (2021-05-07 17:22:42)
                             'size'  6585585