======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '156'
                                          'artist'  'Patrick Wolf'
                                     'text_people'  ''
                                         'release'  'ff3'
                                           'title'  'Tristan'
                                           'quals'  ("['Q-HAP-2', 'Q-UNU-1', 'Q-LOCALNESS-1', 'Q-OLDST-3', 'Q-JZFKS-1', "
 "'Q-HHRNBTT-1', 'q-syn-2', 'q-bass-3', 'q-busy-3', 'q-grit-2', 'q-play-2', "
 "'q-chart-2', 'q-drums-4', 'q-other-2', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['indie', 'beautiful', 'alternative', 'amazing', 'singer songwriter']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '2005'
                                        'comments'  ''
                                           'genre'  'ifs-songwriter-indie-rock;ifs-songwriter-folk;rock-cppex'
                                             'bpm'  '115.0'
                                             'key'  '1A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'ff3'
'TBPM' (BPM (beats per minute))                     '115.0'
'TCON' (Content type, a.k.a. Genre)                 ['ifs-songwriter-indie-rock', 'ifs-songwriter-folk', 'rock-cppex']
'TDRC' (Recording time)                             '2005'
'TIT2' (Title/songname/content description)         'Tristan'
'TKEY' (Initial key)                                '1A'
'TPE1' (Lead performer(s)/Soloist(s))               'Patrick Wolf'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TXXX:Mp3gain_minmax'                               '114,184'
'TXXX:Mp3gain_undo'                                 '+006,+006,N'
'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:Tracknum'                                     '19'
'TXXX:lastfmtags'                                   ['indie', 'beautiful', 'alternative', 'amazing', 'singer songwriter']
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '-0.21 dB'
'TXXX:replaygain_track_peak'                        '0.381954'

========================== row from database ==========================
                                              'id'  1350328
                                            'path'  /data/Music/Bulk/00poprockelectronic/ff3/19 - Patrick Wolf - Tristan.mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  156
                                           'genre'  ifs-songwriter-indie-rock;ifs-songwriter-folk;rock-cppex
                                        'filesize'  3747763
                                           'mtime'  1638554784
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic 19 ifs songwriter indie rock;ifs songwriter folk;rock cppex
                                      'tag_artist'  Patrick Wolf
                                     'tag_release'  ff3
                                       'tag_title'  Tristan
                                             'bpm'  115.0
                                    'search_title'  'tristan':1
                                   'search_artist'  'patrick':1 'wolf':2
                                  'search_release'  'ff3':1
                                     'search_rest'  '00poprockelectronic':1 '19':2 'cppex':14 'folk':10,12 'ifs':3,7,9 'indie':5 'rock':6,8,11,13 'songwriter':4
                                    'search_combo'  '00poprockelectronic':5 '19':6 'cppex':18 'ff3':4C 'folk':14,16 'ifs':7,11,13 'indie':9 'patrick':2B 'rock':10,12,15,17 'songwriter':8 'tristan':1A 'wolf':3B
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  1A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-4', 'q-syn-2', 'q-chart-2', 'q-other-2', 'Q-HAP-2', 'q-bass-3', 'q-grit-2']
                                      'lastfmtags'  ['indie', 'beautiful', 'alternative', 'amazing', 'singer songwriter']
                                        'tag_date'  2005
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1638554784.4354274  (2021-12-03 19:06:24)
                             'size'  3747763