======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '194'
                                          'artist'  'The BossHoss'
                                     'text_people'  ''
                                         'release'  'Internashville Urban Hymns'
                                           'title'  'Loser'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-OLDST-3', 'Q-UNU-2', 'Q-HHRNBTT-1', "
 "'Q-LOCALNESS-2', 'q-syn-2', 'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-2', "
 "'q-chart-2', 'q-drums-2', 'q-other-2', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['german', 'country', 'cover', 'rockabilly', 'rock']"
                                     'discogstags'  "['rock', 'country rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '8'
                                      'tracktotal'  ''
                                            'date'  '2004'
                                        'comments'  ''
                                           'genre'  'entertaining-unsorted;set-cover or covered'
                                             'bpm'  '104.822'
                                             'key'  '8A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Internashville Urban Hymns'
'TBPM' (BPM (beats per minute))                     '104.822'
'TCON' (Content type, a.k.a. Genre)                 ['entertaining-unsorted', 'set-cover or covered']
'TDRC' (Recording time)                             '2004'
'TIT2' (Title/songname/content description)         'Loser'
'TKEY' (Initial key)                                '8A'
'TPE1' (Lead performer(s)/Soloist(s))               'The BossHoss'
'TRCK' (Track number/Position in set)               '8'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '2'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '2'
'TXXX:discogstags'                                  ['rock', 'country rock']
'TXXX:lastfmtags'                                   ['german', 'country', 'cover', 'rockabilly', 'rock']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '2'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '+0.30 dB'
'TXXX:replaygain_track_peak'                        '0.352343'

========================== row from database ==========================
                                              'id'  1286096
                                            'path'  /data/Music/Bulk/00spent/The Boss Hoss/Boss HOss-Internashville Urban Hymns-08-Loser.mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  194
                                           'genre'  entertaining-unsorted;set-cover or covered
                                        'filesize'  4669151
                                           'mtime'  1620527068
                                   'redo_metaread'  0
                                        'rest_str'   00spent HOss 08 entertaining unsorted;set cover or covered
                                      'tag_artist'  The BossHoss
                                     'tag_release'  Internashville Urban Hymns
                                       'tag_title'  Loser
                                             'bpm'  104.822
                                    'search_title'  'loser':1
                                   'search_artist'  'boss':3 'bosshoss':2 'hoss':4 'the':1
                                  'search_release'  'hymns':3 'internashville':1 'urban':2
                                     'search_rest'  '00spent':1 'cover':8 'covered':10 'entertaining':3 'hoss':2 'or':9 'set':5,7 'unsorted':4,6
                                    'search_combo'  '00spent':9 'boss':4B 'bosshoss':3B 'cover':16 'covered':18 'entertaining':11 'hoss':5B,10 'hymns':8C 'internashville':6C 'loser':1A 'or':17 'set':13,15 'the':2B 'unsorted':12,14 'urban':7C
                                    'tag_tracknum'  8
                                      'num_images'  0
                                             'key'  8A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-2', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-3', 'Q-UNU-2', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-2', 'q-syn-2', 'q-chart-2', 'q-other-2', 'Q-HAP-3', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['german', 'country', 'cover', 'rockabilly', 'rock']
                                        'tag_date'  2004
                                     'discogstags'  ['rock', 'country rock']

============================== file details ==============================
                                           'mtime'  1620527068.0894573  (2021-05-09 04:24:28)
                             'size'  4669151