======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '249'
                                          'artist'  'Kate Rusby'
                                     'text_people'  ''
                                         'release'  'Little Lights'
                                           'title'  'William and Davy'
                                           'quals'  ("['Q-HAP-2', 'Q-LOCALNESS-1', 'Q-UNU-1', 'Q-JZFKS-1', 'Q-OLDST-3', "
 "'Q-HHRNBTT-1', 'q-syn-2', 'q-bass-1', 'q-busy-3', 'q-grit-2', 'q-play-2', "
 "'q-chart-2', 'q-drums-1', 'q-other-3', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['british folk', 'female vocalists', 'british', 'folk', 'singer songwriter']"
                                     'discogstags'  "['folk, world, & country']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '8'
                                      'tracktotal'  ''
                                            'date'  '2001'
                                        'comments'  ''
                                           'genre'  'ifs-songwriter'
                                             'bpm'  '117.330'
                                             'key'  '10B'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Little Lights'
'TBPM' (BPM (beats per minute))                     '117.330'
'TCON' (Content type, a.k.a. Genre)                 'ifs-songwriter'
'TDRC' (Recording time)                             '2001'
'TIT2' (Title/songname/content description)         'William and Davy'
'TKEY' (Initial key)                                '10B'
'TPE1' (Lead performer(s)/Soloist(s))               'Kate Rusby'
'TRCK' (Track number/Position in set)               '8'
'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'                                  'folk, world, & country'
'TXXX:lastfmtags'                                   ['british folk', 'female vocalists', 'british', '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'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+0.46 dB'
'TXXX:replaygain_track_peak'                        '0.587645'

========================== row from database ==========================
                                              'id'  235900
                                            'path'  /data/Music/Bulk/00singer-songwriter-eos/Kate Rusby/MBZ;#Kate Rusby;#Little Lights;#08;#William and Davy.mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  249
                                           'genre'  ifs-songwriter
                                        'filesize'  5992014
                                           'mtime'  1637330795
                                   'redo_metaread'  0
                                        'rest_str'   00singer songwriter eos MBZ;#Kate Rusby;#Little Lights;#08;#William ifs songwriter
                                      'tag_artist'  Kate Rusby
                                     'tag_release'  Little Lights
                                       'tag_title'  William and Davy
                                             'bpm'  117.33
                                    'search_title'  'and':2 'davy':3 'william':1
                                   'search_artist'  'kate':1 'rusby':2
                                  'search_release'  'lights':2 'little':1
                                     'search_rest'  '00singer':1 '08':13,16 'eos':3 'ifs':18 'kate':5,7 'lights':12,15 'little':9,11 'mbz':4,6 'rusby':8,10 'songwriter':2 'william':14,17
                                    'search_combo'  '00singer':8 '08':20,23 'and':2A 'davy':3A 'eos':10 'ifs':25 'kate':4B,12,14 'lights':7C,19,22 'little':6C,16,18 'mbz':11,13 'rusby':5B,15,17 'songwriter':9 'william':1A,21,24
                                    'tag_tracknum'  8
                                      'num_images'  0
                                             'key'  10B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-1', 'q-syn-2', 'q-chart-2', 'q-other-3', 'Q-HAP-2', 'q-bass-1', 'q-grit-2']
                                      'lastfmtags'  ['british folk', 'female vocalists', 'british', 'folk', 'singer songwriter']
                                        'tag_date'  2001
                                     'discogstags'  ['folk, world, & country']

============================== file details ==============================
                                           'mtime'  1637330795.3463533  (2021-11-19 15:06:35)
                             'size'  5992014