======================== unified (from filesystem) ========================
                                         'bitrate'  '217.288'
                                        'duration'  '441'
                                          'artist'  'Infected Mushroom'
                                     'text_people'  ''
                                         'release'  'IM the Supervisor'
                                           'title'  'Stretched'
                                           'quals'  ("['Q-UNU-2', 'Q-JZFKS-1', 'Q-HAP-1', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-3', 'q-syn-3', 'q-bass-4', 'q-busy-3', 'q-grit-3', 'q-play-3', "
 "'q-chart-2', 'q-drums-4', 'q-other-2', 'q-piano-1', 'q-vocals-1', "
 "'q-mixbeat-3']")
                                      'lastfmtags'  "['trance', 'goa', 'electronic', 'psychedelic', 'psytrance']"
                                     'discogstags'  "['electronic']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '10'
                                      'tracktotal'  ''
                                            'date'  '2004'
                                        'comments'  ''
                                           'genre'  'eid-ebm or industrial or darkwave'
                                             'bpm'  '120.042'
                                             'key'  '8A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'IM the Supervisor'
'TBPM' (BPM (beats per minute))                     '120.042'
'TCON' (Content type, a.k.a. Genre)                 'eid-ebm or industrial or darkwave'
'TDRC' (Recording time)                             '2004'
'TIT2' (Title/songname/content description)         'Stretched'
'TKEY' (Initial key)                                '8A'
'TPE1' (Lead performer(s)/Soloist(s))               'Infected Mushroom'
'TRCK' (Track number/Position in set)               '10'
'TXXX:Q-HAP'                                        '1'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '2'
'TXXX:discogstags'                                  'electronic'
'TXXX:lastfmtags'                                   ['trance', 'goa', 'electronic', 'psychedelic', 'psytrance']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '3'
'TXXX:q-mixbeat'                                    '3'
'TXXX:q-other'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '3'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '+0.10 dB'
'TXXX:replaygain_track_peak'                        '0.420849'

========================== row from database ==========================
                                              'id'  1345969
                                            'path'  /data/Music/Bulk/00poprockelectronic/Infected Mushroom/10_infected_mushroom-stretched-fwyh.mp3
                                         'working'  None
                                         'bitrate'  217
                                    'duration_sec'  441
                                           'genre'  eid-ebm or industrial or darkwave
                                        'filesize'  12006882
                                           'mtime'  1620296943
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic 10_infected_mushroom stretched fwyh eid ebm industrial darkwave
                                      'tag_artist'  Infected Mushroom
                                     'tag_release'  IM the Supervisor
                                       'tag_title'  Stretched
                                             'bpm'  120.042
                                    'search_title'  'stretched':1
                                   'search_artist'  'infected':1 'mushroom':2
                                  'search_release'  'im':1 'supervisor':3 'the':2
                                     'search_rest'  '00poprockelectronic':1 '10':2 'darkwave':10 'ebm':8 'eid':7 'fwyh':6 'industrial':9 'infected':3 'mushroom':4 'stretched':5
                                    'search_combo'  '00poprockelectronic':7 '10':8 'darkwave':16 'ebm':14 'eid':13 'fwyh':12 'im':4C 'industrial':15 'infected':2B,9 'mushroom':3B,10 'stretched':1A,11 'supervisor':6C 'the':5C
                                    'tag_tracknum'  10
                                      'num_images'  0
                                             'key'  8A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-3', 'q-play-3', 'Q-OLDST-3', 'Q-UNU-2', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-4', 'q-syn-3', 'q-chart-2', 'q-other-2', 'Q-HAP-1', 'q-bass-4', 'q-grit-3']
                                      'lastfmtags'  ['trance', 'goa', 'electronic', 'psychedelic', 'psytrance']
                                        'tag_date'  2004
                                     'discogstags'  ['electronic']

============================== file details ==============================
                                           'mtime'  1620296942.7554088  (2021-05-06 12:29:02)
                             'size'  12006882