======================== unified (from filesystem) ========================
                                         'bitrate'  '320.0'
                                        'duration'  '459'
                                          'artist'  'Zoë Keating'
                                     'text_people'  ''
                                         'release'  'One Cello x 16: Natoma'
                                           'title'  'Tetrishead'
                                           'quals'  ("['Q-HAP-2', 'Q-LOCALNESS-1', 'Q-JZFKS-1', 'Q-UNU-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-1', 'q-syn-1', 'q-bass-3', 'q-busy-2', 'q-grit-1', 'q-play-3', "
 "'q-chart-2', 'q-drums-1', 'q-other-4', 'q-piano-1', 'q-vocals-1', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['instrumental', 'equinonvox', 'classical', 'cello', 'ambient']"
                                     'discogstags'  "['electronic']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '4'
                                      'tracktotal'  ''
                                            'date'  '2005'
                                        'comments'  ''
                                           'genre'  'prerock-classical or classical instruments-contemporary'
                                             'bpm'  '115.9'
                                             'key'  '8A'
                                        'acoustid'  ''
rest: ''

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

'APIC:cover'                                        type PictureType.COVER_FRONT (Cover (front)) b'cover'
                                     
'TALB' (Album/Movie/Show title)                     'One Cello x 16: Natoma'
'TBPM' (BPM (beats per minute))                     '115.9'
'TCON' (Content type, a.k.a. Genre)                 'prerock-classical or classical instruments-contemporary'
'TDRC' (Recording time)                             '2005'
'TIT2' (Title/songname/content description)         'Tetrishead'
'TKEY' (Initial key)                                '8A'
'TPE1' (Lead performer(s)/Soloist(s))               'Zoë Keating'
'TRCK' (Track number/Position in set)               '4'
'TSRC' (ISRC (international standard recording code))  'USCGH0547341'
'TXXX:Q-HAP'                                        '2'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  'electronic'
'TXXX:lastfmtags'                                   ['instrumental', 'equinonvox', 'classical', 'cello', 'ambient']
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '2'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '1'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '4'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '-1.20 dB'
'TXXX:replaygain_track_peak'                        '0.591010'

========================== row from database ==========================
                                              'id'  306133
                                            'path'  /data/Music/Bulk/00instruments-classical/One Cello x 16- Natoma/04 Tetrishead.mp3
                                         'working'  None
                                         'bitrate'  320
                                    'duration_sec'  459
                                           'genre'  prerock-classical or classical instruments-contemporary
                                        'filesize'  18525599
                                           'mtime'  1637329800
                                   'redo_metaread'  0
                                        'rest_str'   00instruments classical 04 prerock classical or classical instruments contemporary
                                      'tag_artist'  Zoë Keating
                                     'tag_release'  One Cello x 16: Natoma
                                       'tag_title'  Tetrishead
                                             'bpm'  115.9
                                    'search_title'  'tetrishead':1
                                   'search_artist'  'keating':3 'zoe':1,2
                                  'search_release'  '16':4,5 'cello':2 'natoma':6 'one':1 'x':3
                                     'search_rest'  '00instruments':1 'classical':2 'contemporary':6 'instruments':5 'or':4 'prerock':3
                                    'search_combo'  '00instruments':11 '16':8C,9C 'cello':6C 'classical':12 'contemporary':16 'instruments':15 'keating':4B 'natoma':10C 'one':5C 'or':14 'prerock':13 'tetrishead':1A 'x':7C 'zoe':2B,3B
                                    'tag_tracknum'  4
                                      'num_images'  1
                                             'key'  8A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-3', 'Q-OLDST-1', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-2', 'q-drums-1', 'q-syn-1', 'q-chart-2', 'q-other-4', 'Q-HAP-2', 'q-bass-3', 'q-grit-1']
                                      'lastfmtags'  ['instrumental', 'equinonvox', 'classical', 'cello', 'ambient']
                                        'tag_date'  2005
                                     'discogstags'  ['electronic']

============================== file details ==============================
                                           'mtime'  1637329800.4766643  (2021-11-19 14:50:00)
                             'size'  18525599