======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '217'
                                          'artist'  'Red Hot Chili Peppers'
                                     'text_people'  ''
                                         'release'  '100 Greatest Rock Songs Of The 90S'
                                           'title'  'Scar Tissue'
                                           'quals'  ("['Q-HAP-3', 'Q-UNU-1', 'Q-HHRNBTT-1', 'Q-LOCALNESS-1', 'Q-JZFKS-4', "
 "'Q-OLDST-2', 'q-syn-2', 'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-2', "
 "'q-chart-4', 'q-drums-3', 'q-other-3', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-2']")
                                      'lastfmtags'  "['alternative rock', 'funk rock', 'alternative', 'funk', 'rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '71'
                                      'tracktotal'  ''
                                            'date'  '1999'
                                        'comments'  ''
                                           'genre'  'funk or soul-funk;set-pl-billboard'
                                             'bpm'  '89.493'
                                             'key'  '7A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     '100 Greatest Rock Songs Of The 90S'
'TBPM' (BPM (beats per minute))                     '89.493'
'TCON' (Content type, a.k.a. Genre)                 ['funk or soul-funk', 'set-pl-billboard']
'TDRC' (Recording time)                             '1999'
'TIT2' (Title/songname/content description)         'Scar Tissue'
'TKEY' (Initial key)                                '7A'
'TPE1' (Lead performer(s)/Soloist(s))               'Red Hot Chili Peppers'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TRCK' (Track number/Position in set)               '71'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '4'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['alternative rock', 'funk rock', 'alternative', 'funk', 'rock']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '4'
'TXXX:q-drums'                                      '3'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '2'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '-1.04 dB'
'TXXX:replaygain_track_peak'                        '0.340708'

========================== row from database ==========================
                                              'id'  1343604
                                            'path'  /data/Music/Bulk/00poprockelectronic/90s/71-Red_Hot_Chili_Peppers-Scar_Tissue.mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  217
                                           'genre'  funk or soul-funk;set-pl-billboard
                                        'filesize'  5227218
                                           'mtime'  1620665787
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic 90s 71 Red_Hot_Chili_Peppers Scar_Tissue funk or soul funk;set pl billboard
                                      'tag_artist'  Red Hot Chili Peppers
                                     'tag_release'  100 Greatest Rock Songs Of The 90S
                                       'tag_title'  Scar Tissue
                                             'bpm'  89.493
                                    'search_title'  'scar':1 'tissue':2
                                   'search_artist'  'chili':3 'hot':2 'peppers':4 'red':1
                                  'search_release'  '100':1 '90s':7 'greatest':2 'of':5 'rock':3 'songs':4 'the':6
                                     'search_rest'  '00poprockelectronic':1 '71':3 '90s':2 'billboard':18 'chili':6 'funk':10,13,15 'hot':5 'or':11 'peppers':7 'pl':17 'red':4 'scar':8 'set':14,16 'soul':12 'tissue':9
                                    'search_combo'  '00poprockelectronic':14 '100':7C '71':16 '90s':13C,15 'billboard':31 'chili':5B,19 'funk':23,26,28 'greatest':8C 'hot':4B,18 'of':11C 'or':24 'peppers':6B,20 'pl':30 'red':3B,17 'rock':9C 'scar':1A,21 'set':27,29 'songs':10C 'soul':25 'the':12C 'tissue':2A,22
                                    'tag_tracknum'  71
                                      'num_images'  0
                                             'key'  7A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-2', 'q-play-2', 'Q-OLDST-2', 'Q-UNU-1', 'Q-JZFKS-4', 'q-busy-3', 'q-drums-3', 'q-syn-2', 'q-chart-4', 'q-other-3', 'Q-HAP-3', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['alternative rock', 'funk rock', 'alternative', 'funk', 'rock']
                                        'tag_date'  1999
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620665787.3890023  (2021-05-10 18:56:27)
                             'size'  5227218