======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '257'
                                          'artist'  'Ani DiFranco'
                                     'text_people'  ''
                                         'release'  'Swing Set'
                                           'title'  "When I'm Gone"
                                           'quals'  ("['Q-HAP-2', 'Q-LOCALNESS-1', 'Q-UNU-1', 'Q-OLDST-3', 'Q-JZFKS-1', "
 "'Q-HHRNBTT-1', 'Q-PLAY-3', 'q-syn-2', 'q-bass-2', 'q-busy-3', 'q-grit-2', "
 "'Q-PIANO-2', 'q-chart-4', 'q-drums-1', 'q-other-3', 'q-vocals-4', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['indie', 'folk rock', 'female vocalists', 'folk', 'singer songwriter']"
                                     'discogstags'  "['rock', 'folk rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '5'
                                      'tracktotal'  ''
                                            'date'  '2000'
                                        'comments'  ''
                                           'genre'  'ifs-songwriter-eos'
                                             'bpm'  '130.398'
                                             'key'  '5A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Swing Set'
'TBPM' (BPM (beats per minute))                     '130.398'
'TCON' (Content type, a.k.a. Genre)                 'ifs-songwriter-eos'
'TDRC' (Recording time)                             '2000'
'TIT2' (Title/songname/content description)         "When I'm Gone"
'TKEY' (Initial key)                                '5A'
'TPE1' (Lead performer(s)/Soloist(s))               'Ani DiFranco'
'TRCK' (Track number/Position in set)               '5'
'TXXX:Q-HAP'                                        '2'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-PIANO'                                      '2'
'TXXX:Q-PLAY'                                       '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  ['rock', 'folk rock']
'TXXX:lastfmtags'                                   ['indie', 'folk rock', 'female vocalists', 'folk', 'singer songwriter']
'TXXX:original release date'                        ['2000', '2000']
'TXXX:q-bass'                                       '2'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '4'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '3'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+2.54 dB'
'TXXX:replaygain_track_peak'                        '0.363732'

========================== row from database ==========================
                                              'id'  1504461
                                            'path'  /data/Music/Bulk/00singer-songwriter-eos/00songwriter-eos/Ani DiFranco/Swing Set__MBZ;#Ani DiFranco;#Swing Set;#05;#When I_m Gone.mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  257
                                           'genre'  ifs-songwriter-eos
                                        'filesize'  6180409
                                           'mtime'  1636401234
                                   'redo_metaread'  0
                                        'rest_str'   00singer songwriter eos 00songwriter eos Set__MBZ;#Ani DiFranco;#Swing Set;#05;#When I_m ifs songwriter eos
                                      'tag_artist'  Ani DiFranco
                                     'tag_release'  Swing Set
                                       'tag_title'  When I'm Gone
                                             'bpm'  130.398
                                    'search_title'  'gone':5 'i':2 'im':4 'm':3 'when':1
                                   'search_artist'  'ani':1 'di':3 'difranco':2 'franco':4
                                  'search_release'  'set':2 'swing':1
                                     'search_rest'  '00singer':1 '00songwriter':4 '05':16,19 'ani':7,10 'di':24 'difranco':11,13 'eos':3 'franco':25,27 'i':21 'ifs':23 'm':22 'mbz':6,9 'set':5,8,15,18 'songwriter':2 'swing':12,14,26,28 'when':17,20
                                    'search_combo'  '00singer':12 '00songwriter':15 '05':27,30 'ani':6B,18,21 'di':8B,35 'difranco':7B,22,24 'eos':14 'franco':9B,36,38 'gone':5A 'i':2A,32 'ifs':34 'im':4A 'm':3A,33 'mbz':17,20 'set':11C,16,19,26,29 'songwriter':13 'swing':10C,23,25,37,39 'when':1A,28,31
                                    'tag_tracknum'  5
                                      'num_images'  0
                                             'key'  5A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-1', 'q-mixbeat-1', 'Q-PIANO-2', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-1', 'q-syn-2', 'q-chart-4', 'q-other-3', 'Q-HAP-2', 'Q-PLAY-3', 'q-bass-2', 'q-grit-2']
                                      'lastfmtags'  ['indie', 'folk rock', 'female vocalists', 'folk', 'singer songwriter']
                                        'tag_date'  2000
                                     'discogstags'  ['rock', 'folk rock']

============================== file details ==============================
                                           'mtime'  1636401234.3544564  (2021-11-08 20:53:54)
                             'size'  6180409