======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '214'
                                          'artist'  'Isbells'
                                     'text_people'  ''
                                         'release'  'Isbells'
                                           'title'  'As Long As It Takes'
                                           'quals'  ("['Q-HAP-2', 'Q-LOCALNESS-1', 'Q-JZFKS-1', 'Q-UNU-1', 'Q-OLDST-3', "
 "'Q-HHRNBTT-1', 'q-syn-2', 'q-bass-1', 'q-busy-3', 'q-grit-2', 'q-play-3', "
 "'q-chart-2', 'q-drums-1', 'q-other-4', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['belgium', 'acoustic', 'belgian', 'folk', 'singer songwriter']"
                                     'discogstags'  "['rock', 'pop', 'folk, world, & country', 'indie rock', 'folk']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '1'
                                      'tracktotal'  ''
                                            'date'  '2009'
                                        'comments'  ''
                                           'genre'  'ifs-songwriter'
                                             'bpm'  '125.238'
                                             'key'  '2B'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Isbells'
'TBPM' (BPM (beats per minute))                     '125.238'
'TCON' (Content type, a.k.a. Genre)                 'ifs-songwriter'
'TDRC' (Recording time)                             '2009'
'TIT2' (Title/songname/content description)         'As Long As It Takes'
'TKEY' (Initial key)                                '2B'
'TPE1' (Lead performer(s)/Soloist(s))               'Isbells'
'TRCK' (Track number/Position in set)               '1'
'TXXX:Q-HAP'                                        '2'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  ['rock', 'pop', 'folk, world, & country', 'indie rock', 'folk']
'TXXX:lastfmtags'                                   ['belgium', 'acoustic', 'belgian', 'folk', 'singer songwriter']
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'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'                                     '4'
'TXXX:replaygain_track_gain'                        '+0.69 dB'
'TXXX:replaygain_track_peak'                        '0.353479'

========================== row from database ==========================
                                              'id'  201837
                                            'path'  /data/Music/Bulk/00singer-songwriter-eos/Isbells/01 As Long As It Takes.mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  214
                                           'genre'  ifs-songwriter
                                        'filesize'  5148203
                                           'mtime'  1637249154
                                   'redo_metaread'  0
                                        'rest_str'   00singer songwriter eos 01 ifs songwriter
                                      'tag_artist'  Isbells
                                     'tag_release'  Isbells
                                       'tag_title'  As Long As It Takes
                                             'bpm'  125.238
                                    'search_title'  'as':1 'it':3 'long':2 'takes':4
                                   'search_artist'  'isbells':1
                                  'search_release'  'isbells':1
                                     'search_rest'  '00singer':1 'eos':3 'ifs':4 'songwriter':2
                                    'search_combo'  '00singer':7 'as':1A 'eos':9 'ifs':10 'isbells':5B,6C 'it':3A 'long':2A 'songwriter':8 'takes':4A
                                    'tag_tracknum'  1
                                      'num_images'  0
                                             'key'  2B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', '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-2', 'q-other-4', 'Q-HAP-2', 'q-bass-1', 'q-grit-2']
                                      'lastfmtags'  ['belgium', 'acoustic', 'belgian', 'folk', 'singer songwriter']
                                        'tag_date'  2009
                                     'discogstags'  ['rock', 'pop', 'folk, world, & country', 'indie rock', 'folk']

============================== file details ==============================
                                           'mtime'  1637249153.6477938  (2021-11-18 16:25:53)
                             'size'  5148203