======================== unified (from filesystem) ========================
                                         'bitrate'  '192.478'
                                        'duration'  '335'
                                          'artist'  'Tom Waits'
                                     'text_people'  ''
                                         'release'  'Blue Valentine'
                                           'title'  'A Sweet Little Bullet From a P'
                                           'quals'  ("['Q-JZFKS-2', 'Q-HAP-2', 'Q-LOCALNESS-2', 'Q-UNU-2', 'Q-OLDST-2', "
 "'Q-HHRNBTT-1', 'q-syn-2', 'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-3', "
 "'q-chart-2', 'q-drums-4', 'q-other-2', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['blues', 'rock', 'alternative', 'experimental', 'singer songwriter']"
                                     'discogstags'  "['rock', 'blues rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '9'
                                      'tracktotal'  ''
                                            'date'  '1978'
                                        'comments'  ''
                                           'genre'  'ifs-songwriter-eos'
                                             'bpm'  '112.508'
                                             'key'  '8A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Blue Valentine'
'TBPM' (BPM (beats per minute))                     '112.508'
'TCON' (Content type, a.k.a. Genre)                 'ifs-songwriter-eos'
'TDRC' (Recording time)                             '1978'
'TIT2' (Title/songname/content description)         'A Sweet Little Bullet From a P'
'TKEY' (Initial key)                                '8A'
'TPE1' (Lead performer(s)/Soloist(s))               'Tom Waits'
'TRCK' (Track number/Position in set)               '9'
'TXXX:Q-HAP'                                        '2'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '2'
'TXXX:Q-LOCALNESS'                                  '2'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-UNU'                                        '2'
'TXXX:discogstags'                                  ['rock', 'blues rock']
'TXXX:lastfmtags'                                   ['blues', 'rock', 'alternative', 'experimental', 'singer songwriter']
'TXXX:q-bass'                                       '4'
'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'                                       '3'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '+1.86 dB'
'TXXX:replaygain_track_peak'                        '0.772226'

========================== row from database ==========================
                                              'id'  1363160
                                            'path'  /data/Music/Bulk/00singer-songwriter-eos/00songwriter-eos/Tom Waits/1978 - Blue Valentine/MBZ;#Tom Waits;#Blue Valentine;#09;#A Sweet Little Bullet From a Pretty Blue Gun.mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  335
                                           'genre'  ifs-songwriter-eos
                                        'filesize'  8082987
                                           'mtime'  1639508243
                                   'redo_metaread'  0
                                        'rest_str'   00singer songwriter eos 00songwriter eos 1978 MBZ;#Tom Waits;#Blue Valentine;#09;#A Pretty Gun ifs songwriter eos
                                      'tag_artist'  Tom Waits
                                     'tag_release'  Blue Valentine
                                       'tag_title'  A Sweet Little Bullet From a P
                                             'bpm'  112.508
                                    'search_title'  'a':1 'bullet':4 'from':5 'little':3 'p':6 'sweet':2
                                   'search_artist'  'tom':1 'waits':2
                                  'search_release'  'blue':1 'valentine':2
                                     'search_rest'  '00singer':1 '00songwriter':4 '09':15,18 '1978':5 'a':16,19 'blue':11,13 'eos':3 'gun':21 'ifs':22 'mbz':6,8 'pretty':20 'songwriter':2 'tom':7,9 'valentine':14,17 'waits':10,12
                                    'search_combo'  '00singer':11 '00songwriter':14 '09':25,28 '1978':15 'a':1A,26,29 'blue':9C,21,23 'bullet':4A 'eos':13 'from':5A 'gun':31 'ifs':32 'little':3A 'mbz':16,18 'p':6A 'pretty':30 'songwriter':12 'sweet':2A 'tom':7B,17,19 'valentine':10C,24,27 'waits':8B,20,22
                                    'tag_tracknum'  9
                                      'num_images'  0
                                             'key'  8A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-2', 'q-piano-1', 'q-mixbeat-1', 'q-play-3', 'Q-OLDST-2', 'Q-UNU-2', 'Q-JZFKS-2', 'q-busy-3', 'q-drums-4', 'q-syn-2', 'q-chart-2', 'q-other-2', 'Q-HAP-2', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['blues', 'rock', 'alternative', 'experimental', 'singer songwriter']
                                        'tag_date'  1978
                                     'discogstags'  ['rock', 'blues rock']

============================== file details ==============================
                                           'mtime'  1639508243.1162112  (2021-12-14 19:57:23)
                             'size'  8082987