======================== unified (from filesystem) ========================
                                         'bitrate'  '180.955'
                                        'duration'  '220'
                                          'artist'  'Primal Scream'
                                     'text_people'  ''
                                         'release'  'Evil Heat'
                                           'title'  'Some Velvet Morning'
                                           'quals'  ("['Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'Q-HHRNBTT-1', 'Q-LOCALNESS-1', "
 "'q-syn-2', 'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-2', 'q-chart-2', "
 "'q-drums-4', 'q-other-1', 'q-piano-1', 'q-vocals-1', 'q-mixbeat-2']")
                                      'lastfmtags'  "['indie', 'alternative', 'britpop', 'electronic', 'rock']"
                                     'discogstags'  "['electronic', 'rock', 'leftfield', 'electro', 'synth-pop']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '8'
                                      'tracktotal'  ''
                                            'date'  '2002'
                                        'comments'  ''
                                           'genre'  'rock-unsorted'
                                             'bpm'  '122.957'
                                             'key'  '1A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Evil Heat'
'TBPM' (BPM (beats per minute))                     '122.957'
'TCON' (Content type, a.k.a. Genre)                 'rock-unsorted'
'TDRC' (Recording time)                             '2002'
'TIT2' (Title/songname/content description)         'Some Velvet Morning'
'TKEY' (Initial key)                                '1A'
'TPE1' (Lead performer(s)/Soloist(s))               'Primal Scream'
'TRCK' (Track number/Position in set)               '8'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  ['electronic', 'rock', 'leftfield', 'electro', 'synth-pop']
'TXXX:lastfmtags'                                   ['indie', 'alternative', 'britpop', 'electronic', 'rock']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '2'
'TXXX:q-other'                                      '1'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '-0.92 dB'
'TXXX:replaygain_track_peak'                        '0.629819'

========================== row from database ==========================
                                              'id'  1346738
                                            'path'  /data/Music/Bulk/00poprockelectronic/Primal Scream/Primal Scream__MBZ;#Primal Scream;#Evil Heat;#Some Velvet Morning;#8.mp3
                                         'working'  None
                                         'bitrate'  180
                                    'duration_sec'  220
                                           'genre'  rock-unsorted
                                        'filesize'  4986512
                                           'mtime'  1620391716
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic Scream__MBZ;#Primal Scream;#Evil Heat;#Some Morning;#8 rock unsorted
                                      'tag_artist'  Primal Scream
                                     'tag_release'  Evil Heat
                                       'tag_title'  Some Velvet Morning
                                             'bpm'  122.957
                                    'search_title'  'morning':3 'some':1 'velvet':2
                                   'search_artist'  'primal':1 'scream':2
                                  'search_release'  'evil':1 'heat':2
                                     'search_rest'  '00poprockelectronic':1 '8':17,19 'evil':9,11 'heat':12,14 'mbz':3,6 'morning':16,18 'primal':4,7 'rock':20 'scream':2,5,8,10 'some':13,15 'unsorted':21
                                    'search_combo'  '00poprockelectronic':8 '8':24,26 'evil':6C,16,18 'heat':7C,19,21 'mbz':10,13 'morning':3A,23,25 'primal':4B,11,14 'rock':27 'scream':5B,9,12,15,17 'some':1A,20,22 'unsorted':28 'velvet':2A
                                    'tag_tracknum'  8
                                      'num_images'  0
                                             'key'  1A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-2', '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-1', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['indie', 'alternative', 'britpop', 'electronic', 'rock']
                                        'tag_date'  2002
                                     'discogstags'  ['electronic', 'rock', 'leftfield', 'electro', 'synth-pop']

============================== file details ==============================
                                           'mtime'  1620391715.7338727  (2021-05-07 14:48:35)
                             'size'  4986512