======================== unified (from filesystem) ========================
                                         'bitrate'  '153.473'
                                        'duration'  '17'
                                          'artist'  'Primus'
                                     'text_people'  ''
                                         'release'  'Antipop'
                                           'title'  'Intro'
                                           'quals'  ("['Q-UNU-2', 'Q-JZFKS-1', 'Q-HAP-1', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-3', 'q-syn-2', 'q-bass-1', 'q-busy-3', 'q-grit-3', 'q-play-2', "
 "'q-chart-3', 'q-drums-1', 'q-other-4', 'q-piano-1', 'q-vocals-2', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['alternative rock', 'funk metal', 'alternative', 'funk', 'rock']"
                                     'discogstags'  "['rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '1'
                                      'tracktotal'  '13'
                                            'date'  '1999'
                                        'comments'  ''
                                           'genre'  'eid-metal'
                                             'bpm'  '144.852'
                                             'key'  '1B'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Antipop'
'TBPM' (BPM (beats per minute))                     '144.852'
'TCON' (Content type, a.k.a. Genre)                 'eid-metal'
'TDOR' (Original release time)                      '1999'
'TDRC' (Recording time)                             '1999'
'TIT2' (Title/songname/content description)         'Intro'
'TKEY' (Initial key)                                '1B'
'TPE1' (Lead performer(s)/Soloist(s))               'Primus'
'TRCK' (Track number/Position in set)               '1/13'
'TXXX:Q-HAP'                                        '1'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '2'
'TXXX:discogstags'                                  'rock'
'TXXX:iTunes_CDDB_1'                                'B70ED30D+284805+13+150+1455+14650+33615+50820+75817+114422+137717+160532+182162+197835+214492+239987'
'TXXX:iTunes_CDDB_TrackNumber'                      '1'
'TXXX:lastfmtags'                                   ['alternative rock', 'funk metal', 'alternative', 'funk', 'rock']
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '3'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '3'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '4'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '2'
'TXXX:replaygain_track_gain'                        '+0.21 dB'
'TXXX:replaygain_track_peak'                        '0.473747'
'TXXX:tempo'                                        '00000 BPM'

========================== row from database ==========================
                                              'id'  1246176
                                            'path'  /data/Music/Bulk/00dwimp/Primus/Antipop/01 Intro.mp3
                                         'working'  None
                                         'bitrate'  154
                                    'duration_sec'  17
                                           'genre'  eid-metal
                                        'filesize'  337722
                                           'mtime'  1620301610
                                   'redo_metaread'  0
                                        'rest_str'   00dwimp 01 eid metal
                                      'tag_artist'  Primus
                                     'tag_release'  Antipop
                                       'tag_title'  Intro
                                             'bpm'  144.852
                                    'search_title'  'intro':1
                                   'search_artist'  'primus':1
                                  'search_release'  'antipop':1
                                     'search_rest'  '00dwimp':1 'eid':2 'metal':3
                                    'search_combo'  '00dwimp':4 'antipop':3C 'eid':5 'intro':1A 'metal':6 'primus':2B
                                    'tag_tracknum'  1
                                      'num_images'  0
                                             'key'  1B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-2', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-3', 'Q-UNU-2', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-1', 'q-syn-2', 'q-chart-3', 'q-other-4', 'Q-HAP-1', 'q-bass-1', 'q-grit-3']
                                      'lastfmtags'  ['alternative rock', 'funk metal', 'alternative', 'funk', 'rock']
                                        'tag_date'  1999
                                     'discogstags'  ['rock']

============================== file details ==============================
                                           'mtime'  1620301610.3927357  (2021-05-06 13:46:50)
                             'size'  337722