======================== unified (from filesystem) ========================
                                         'bitrate'  '214.907'
                                        'duration'  '168'
                                          'artist'  'Kitty, Daisy & Lewis'
                                     'text_people'  ''
                                         'release'  'Kitty, Daisy & Lewis'
                                           'title'  'Ooo wee'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-2', 'Q-LOCALNESS-2', 'Q-UNU-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-1', 'q-syn-1', 'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-3', "
 "'q-chart-2', 'q-drums-3', 'q-other-2', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['rock and roll', 'country', '50s', 'rockabilly', 'rythm and blues']"
                                     'discogstags'  ("['rock', 'blues', 'folk, world, & country', 'country blues', 'rock & roll', "
 "'blues rock', 'bluegrass', 'rockabilly']")
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '9'
                                      'tracktotal'  ''
                                            'date'  '2008'
                                        'comments'  ''
                                           'genre'  'prerock-jb-jazz-soft-swing'
                                             'bpm'  '87.069'
                                             'key'  '1A'
                                        'acoustid'  ''
rest: ''

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'TALB' (Album/Movie/Show title)                     'Kitty, Daisy & Lewis'
'TBPM' (BPM (beats per minute))                     '87.069'
'TCON' (Content type, a.k.a. Genre)                 'prerock-jb-jazz-soft-swing'
'TDRC' (Recording time)                             '2008'
'TENC' (Encoded by)                                 'Buy The Original CD/Vinyl, Support The Artists!'
'TIT2' (Title/songname/content description)         'Ooo wee'
'TKEY' (Initial key)                                '1A'
'TPE1' (Lead performer(s)/Soloist(s))               'Kitty, Daisy & Lewis'
'TPUB' (Publisher)                                  'Pias UK'
'TRCK' (Track number/Position in set)               '9'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '2'
'TXXX:Q-LOCALNESS'                                  '2'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  ['rock',
 'blues',
 'folk, world, & country',
 'country blues',
 'rock & roll',
 'blues rock',
 'bluegrass',
 'rockabilly']
'TXXX:lastfmtags'                                   ['rock and roll', 'country', '50s', 'rockabilly', 'rythm and blues']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '3'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '+1.22 dB'
'TXXX:replaygain_track_peak'                        '0.322988'

========================== row from database ==========================
                                              'id'  1274238
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/Kitty, Daisy & Lewis - Daisy and Lewis Kitty/daisy and lewis kitty/kitty, daisy and lewis/kitty, daisy & lewis - 09 - ooo wee.mp3
                                         'working'  None
                                         'bitrate'  215
                                    'duration_sec'  168
                                           'genre'  prerock-jb-jazz-soft-swing
                                        'filesize'  4535631
                                           'mtime'  1620530800
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country and daisy and lewis kitty kitty, daisy and lewis kitty, daisy lewis 09 ooo prerock jb jazz soft swing
                                      'tag_artist'  Kitty, Daisy & Lewis
                                     'tag_release'  Kitty, Daisy & Lewis
                                       'tag_title'  Ooo wee
                                             'bpm'  87.069
                                    'search_title'  'ooo':1 'wee':2
                                   'search_artist'  'daisy':3 'kitty':1,2 'lewis':4
                                  'search_release'  'daisy':3 'kitty':1,2 'lewis':4
                                     'search_rest'  'and':5 'country':4 'daisy':6 'exotica':2 'jazz':1 'jb':12 'kitty':8,9 'lewis':7 'oldies':3 'ooo':10 'prerock':11 'soft':13 'swing':14
                                    'search_combo'  'and':15 'country':14 'daisy':5B,9C,16 'exotica':12 'jazz':11 'jb':22 'kitty':3B,4B,7C,8C,18,19 'lewis':6B,10C,17 'oldies':13 'ooo':1A,20 'prerock':21 'soft':23 'swing':24 'wee':2A
                                    'tag_tracknum'  9
                                      'num_images'  0
                                             'key'  1A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-2', 'q-piano-1', 'q-mixbeat-1', 'q-play-3', 'Q-OLDST-1', 'Q-UNU-1', 'Q-JZFKS-2', 'q-busy-3', 'q-drums-3', 'q-syn-1', 'q-chart-2', 'q-other-2', 'Q-HAP-3', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['rock and roll', 'country', '50s', 'rockabilly', 'rythm and blues']
                                        'tag_date'  2008
                                     'discogstags'  ['rock', 'blues', 'folk, world, & country', 'country blues', 'rock & roll', 'blues rock', 'bluegrass', 'rockabilly']

============================== file details ==============================
                                           'mtime'  1620530800.1717465  (2021-05-09 05:26:40)
                             'size'  4535631