======================== unified (from filesystem) ========================
                                         'bitrate'  '160.0'
                                        'duration'  '595'
                                          'artist'  'Underworld'
                                     'text_people'  ''
                                         'release'  'Dubnobasswithmyheadman '
                                           'title'  'Dirty Epic'
                                           'quals'  ("['Q-HAP-2', 'Q-UNU-1', 'Q-HHRNBTT-1', 'Q-JZFKS-1', 'Q-OLDST-3', "
 "'Q-LOCALNESS-1', 'q-syn-4', 'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-3', "
 "'q-chart-4', 'q-drums-4', 'q-other-2', 'q-piano-1', 'q-vocals-2', "
 "'q-mixbeat-3']")
                                      'lastfmtags'  "['electronica', 'dance', 'techno', 'electronic', 'trance']"
                                     'discogstags'  ("['progressive house', 'techno', 'downtempo', 'progressive trance', "
 "'electronic']")
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '1'
                                      'tracktotal'  ''
                                            'date'  '1994'
                                        'comments'  ''
                                           'genre'  'electronic-th-techno;electronic-th-trance'
                                             'bpm'  '120.0'
                                             'key'  '10A'
                                        'acoustid'  ''
rest: ''

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

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'TALB' (Album/Movie/Show title)                     'Dubnobasswithmyheadman '
'TBPM' (BPM (beats per minute))                     '120.0'
'TCON' (Content type, a.k.a. Genre)                 ['electronic-th-techno', 'electronic-th-trance']
'TDOR' (Original release time)                      '1994'
'TDRC' (Recording time)                             '1994'
'TIT2' (Title/songname/content description)         'Dirty Epic'
'TKEY' (Initial key)                                '10A'
'TPE1' (Lead performer(s)/Soloist(s))               'Underworld'
'TRCK' (Track number/Position in set)               '1'
'TXXX:Q-HAP'                                        '2'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  ['progressive house', 'techno', 'downtempo', 'progressive trance', 'electronic']
'TXXX:lastfmtags'                                   ['electronica', 'dance', 'techno', 'electronic', 'trance']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '4'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '3'
'TXXX:q-other'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '4'
'TXXX:q-vocals'                                     '2'
'TXXX:replaygain_track_gain'                        '-0.47 dB'
'TXXX:replaygain_track_peak'                        '0.834663'

========================== row from database ==========================
                                              'id'  1315647
                                            'path'  /data/Music/Bulk/00poprockelectronic/Underworld/Dubnobasswithmyheadman/Underworld - Dirty Epic - 06.mp3
                                         'working'  None
                                         'bitrate'  160
                                    'duration_sec'  595
                                           'genre'  electronic-th-techno;electronic-th-trance
                                        'filesize'  11915136
                                           'mtime'  1620572460
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic 06 electronic techno;electronic trance
                                      'tag_artist'  Underworld
                                     'tag_release'  Dubnobasswithmyheadman 
                                       'tag_title'  Dirty Epic
                                             'bpm'  120.0
                                    'search_title'  'dirty':1 'epic':2
                                   'search_artist'  'underworld':1
                                  'search_release'  'dubnobasswithmyheadman':1
                                     'search_rest'  '00poprockelectronic':1 'electronic':2,4,6 'techno':3,5 'trance':7
                                    'search_combo'  '00poprockelectronic':5 'dirty':1A 'dubnobasswithmyheadman':4C 'electronic':6,8,10 'epic':2A 'techno':7,9 'trance':11 'underworld':3B
                                    'tag_tracknum'  1
                                      'num_images'  0
                                             'key'  10A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-2', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-3', 'q-play-3', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-4', 'q-syn-4', 'q-chart-4', 'q-other-2', 'Q-HAP-2', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['electronica', 'dance', 'techno', 'electronic', 'trance']
                                        'tag_date'  1994
                                     'discogstags'  ['progressive house', 'techno', 'downtempo', 'progressive trance', 'electronic']

============================== file details ==============================
                                           'mtime'  1620572459.9867544  (2021-05-09 17:00:59)
                             'size'  11915136