======================== unified (from filesystem) ========================
                                         'bitrate'  '163.459'
                                        'duration'  '160'
                                          'artist'  'Mud'
                                     'text_people'  ''
                                         'release'  'L-L-Lucy'
                                           'title'  'Grecian Lament'
                                           'quals'  ("['Q-HAP-3', 'Q-UNU-1', 'Q-JZFKS-1', 'Q-HHRNBTT-1', 'Q-LOCALNESS-1', "
 "'Q-OLDST-2', 'q-syn-2', 'q-bass-2', 'q-busy-3', 'q-grit-2', 'q-play-2', "
 "'q-chart-2', 'q-drums-1', 'q-other-4', 'q-piano-1', 'q-vocals-1', "
 "'q-mixbeat-2']")
                                      'lastfmtags'  "['oldies', 'pop', '70s', 'rock', 'glam rock', 'classic rock']"
                                     'discogstags'  "['pop rock', 'glam', 'rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1978'
                                        'comments'  ''
                                           'genre'  'rock-pop-glam'
                                             'bpm'  '97.600'
                                             'key'  '2B'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'L-L-Lucy'
'TBPM' (BPM (beats per minute))                     '97.600'
'TCON' (Content type, a.k.a. Genre)                 'rock-pop-glam'
'TDRC' (Recording time)                             '1978'
'TIT2' (Title/songname/content description)         'Grecian Lament'
'TKEY' (Initial key)                                '2B'
'TPE1' (Lead performer(s)/Soloist(s))               'Mud'
'TXXX:Mp3gain_minmax'                               '000,189'
'TXXX:Mp3gain_undo'                                 '+001,+001,N'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  ['pop rock', 'glam', 'rock']
'TXXX:lastfmtags'                                   ['oldies', 'pop', '70s', 'rock', 'glam rock', 'classic rock']
'TXXX:q-bass'                                       '2'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '2'
'TXXX:q-other'                                      '4'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '+1.14 dB'
'TXXX:replaygain_track_peak'                        '0.843503'

========================== row from database ==========================
                                              'id'  1354983
                                            'path'  /data/Music/Bulk/00poprockelectronic/Mud/L-L-Lucy/Mud - Grecian Lament.mp3
                                         'working'  None
                                         'bitrate'  163
                                    'duration_sec'  160
                                           'genre'  rock-pop-glam
                                        'filesize'  3277568
                                           'mtime'  1622801940
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic rock pop glam
                                      'tag_artist'  Mud
                                     'tag_release'  L-L-Lucy
                                       'tag_title'  Grecian Lament
                                             'bpm'  97.6
                                    'search_title'  'grecian':1 'lament':2
                                   'search_artist'  'mud':1
                                  'search_release'  'l':1,2 'lllucy':4 'lucy':3
                                     'search_rest'  '00poprockelectronic':1 'glam':4 'pop':3 'rock':2
                                    'search_combo'  '00poprockelectronic':8 'glam':11 'grecian':1A 'l':4C,5C 'lament':2A 'lllucy':7C 'lucy':6C 'mud':3B 'pop':10 'rock':9
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  2B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-2', 'q-play-2', 'Q-OLDST-2', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-1', 'q-syn-2', 'q-chart-2', 'q-other-4', 'Q-HAP-3', 'q-bass-2', 'q-grit-2']
                                      'lastfmtags'  ['oldies', 'pop', '70s', 'rock', 'glam rock', 'classic rock']
                                        'tag_date'  1978
                                     'discogstags'  ['pop rock', 'glam', 'rock']

============================== file details ==============================
                                           'mtime'  1622801939.6877053  (2021-06-04 12:18:59)
                             'size'  3277568