======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '122'
                                          'artist'  'Sleater-Kinney'
                                     'text_people'  ''
                                         'release'  'Dig Me Out'
                                           'title'  'Buy Her Candy'
                                           'quals'  ("['Q-HAP-3', 'Q-UNU-1', 'Q-LOCALNESS-1', 'Q-OLDST-3', 'Q-HHRNBTT-1', "
 "'Q-JZFKS-1', 'q-syn-2', 'q-bass-1', 'q-busy-3', 'q-grit-2', 'q-play-3', "
 "'q-chart-3', 'q-drums-1', 'q-other-4', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['indie', 'riot grrrl', 'female vocalists', 'indie rock', 'rock']"
                                     'discogstags'  "['rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '10'
                                      'tracktotal'  ''
                                            'date'  '1997'
                                        'comments'  ''
                                           'genre'  'ifs-songwriter-indie-rock'
                                             'bpm'  '139.754'
                                             'key'  '1A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Dig Me Out'
'TBPM' (BPM (beats per minute))                     '139.754'
'TCON' (Content type, a.k.a. Genre)                 'ifs-songwriter-indie-rock'
'TDRC' (Recording time)                             '1997'
'TIT2' (Title/songname/content description)         'Buy Her Candy'
'TKEY' (Initial key)                                '1A'
'TPE1' (Lead performer(s)/Soloist(s))               'Sleater-Kinney'
'TRCK' (Track number/Position in set)               '10'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  'rock'
'TXXX:lastfmtags'                                   ['indie', 'riot grrrl', 'female vocalists', 'indie rock', 'rock']
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '3'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '4'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '-0.28 dB'
'TXXX:replaygain_track_peak'                        '0.450862'

========================== row from database ==========================
                                              'id'  1252832
                                            'path'  /data/Music/Bulk/00singer-songwriter-eos/Sleater-Kinney/Dig Me Out__MBZ;#Sleater-Kinney;#Dig Me Out;#10;#Buy Her Candy.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  122
                                           'genre'  ifs-songwriter-indie-rock
                                        'filesize'  1965580
                                           'mtime'  1621697189
                                   'redo_metaread'  0
                                        'rest_str'   00singer songwriter eos Out__MBZ;#Sleater Kinney;#Dig Out;#10;#Buy ifs songwriter indie rock
                                      'tag_artist'  Sleater-Kinney
                                     'tag_release'  Dig Me Out
                                       'tag_title'  Buy Her Candy
                                             'bpm'  139.754
                                    'search_title'  'buy':1 'candy':3 'her':2
                                   'search_artist'  'kinney':2 'sleater':1 'sleaterkinney':3
                                  'search_release'  'dig':1 'me':2 'out':3
                                     'search_rest'  '00singer':1 '10':15,18 'buy':16,19 'dig':11,13 'eos':3 'ifs':20 'indie':21 'kinney':10,12 'mbz':5,8 'out':4,7,14,17 'rock':22 'sleater':6,9 'songwriter':2
                                    'search_combo'  '00singer':10 '10':24,27 'buy':1A,25,28 'candy':3A 'dig':7C,20,22 'eos':12 'her':2A 'ifs':29 'indie':30 'kinney':5B,19,21 'mbz':14,17 'me':8C 'out':9C,13,16,23,26 'rock':31 'sleater':4B,15,18 'sleaterkinney':6B 'songwriter':11
                                    'tag_tracknum'  10
                                      'num_images'  0
                                             'key'  1A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-3', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-1', 'q-syn-2', 'q-chart-3', 'q-other-4', 'Q-HAP-3', 'q-bass-1', 'q-grit-2']
                                      'lastfmtags'  ['indie', 'riot grrrl', 'female vocalists', 'indie rock', 'rock']
                                        'tag_date'  1997
                                     'discogstags'  ['rock']

============================== file details ==============================
                                           'mtime'  1621697189.0847788  (2021-05-22 17:26:29)
                             'size'  1965580