======================== unified (from filesystem) ========================
                                         'bitrate'  '220.59'
                                        'duration'  '159'
                                          'artist'  'Ted Atking & Alain Feanch'
                                     'text_people'  ''
                                         'release'  'Electronic toys'
                                           'title'  'Childrens carnival'
                                           'quals'  ("['Q-HAP-2', 'Q-JZFKS-1', 'Q-UNU-1', 'q-syn-3', 'q-bass-4', 'q-busy-3', "
 "'q-grit-2', 'q-play-3', 'Q-OLDST-3', 'q-chart-1', 'q-drums-1', 'q-other-4', "
 "'q-piano-1', 'q-vocals-1', 'Q-HHRNBTT-1', 'q-mixbeat-2', 'Q-LOCALNESS-1']")
                                      'lastfmtags'  "['funk', 'all', 'library music', 'library', 'sonne immage']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '09'
                                      'tracktotal'  ''
                                            'date'  '1996'
                                        'comments'  ''
                                           'genre'  'electronic-experimental'
                                             'bpm'  '146.0'
                                             'key'  '10A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Electronic toys'
'TBPM' (BPM (beats per minute))                     '146.0'
'TCON' (Content type, a.k.a. Genre)                 'electronic-experimental'
'TDRC' (Recording time)                             '1996'
'TIT2' (Title/songname/content description)         'Childrens carnival'
'TKEY' (Initial key)                                '10A'
'TPE1' (Lead performer(s)/Soloist(s))               'Ted Atking & Alain Feanch'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TRCK' (Track number/Position in set)               '09'
'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:lastfmtags'                                   ['funk', 'all', 'library music', 'library', 'sonne immage']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '2'
'TXXX:q-other'                                      '4'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '3'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '-0.25 dB'
'TXXX:replaygain_track_peak'                        '0.603520'

========================== row from database ==========================
                                              'id'  1533813
                                            'path'  /data/Music/Bulk/00exnnpjpsprgttidm/v.a. -electronic toys [a retrospective of 70_s synthesizer music]  1996/09 - ted atking & alain feanch - childrens carnival.mp3
                                         'working'  None
                                         'bitrate'  220
                                    'duration_sec'  159
                                           'genre'  electronic-experimental
                                        'filesize'  4403072
                                           'mtime'  1636917408
                                   'redo_metaread'  0
                                        'rest_str'   00exnnpjpsprgttidm v.a. electronic [a retrospective of 70_s synthesizer music] 1996 09 ted atking alain feanch childrens electronic experimental
                                      'tag_artist'  Ted Atking & Alain Feanch
                                     'tag_release'  Electronic toys
                                       'tag_title'  Childrens carnival
                                             'bpm'  146.0
                                    'search_title'  'carnival':2 'childrens':1
                                   'search_artist'  'alain':3 'atking':2 'feanch':4 'ted':1
                                  'search_release'  'electronic':1 'toys':2
                                     'search_rest'  '1996':14 '70':9 'a':2,5,6 'alain':17 'atking':16 'childrens':19 'electronic':4 'experimental':20 'feanch':18 'music':12,13 'of':8 'retrospective':7 's':10 'synthesizer':11 'ted':15 'v':1 'va':3
                                    'search_combo'  '1996':22 '70':17 'a':10,13,14 'alain':5B,25 'atking':4B,24 'carnival':2A 'childrens':1A,27 'electronic':7C,12 'experimental':28 'feanch':6B,26 'music':20,21 'of':16 'retrospective':15 's':18 'synthesizer':19 'ted':3B,23 'toys':8C 'v':9 'va':11
                                    'tag_tracknum'  9
                                      'num_images'  0
                                             'key'  10A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-2', 'q-play-3', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-1', 'q-syn-3', 'q-chart-1', 'q-other-4', 'Q-HAP-2', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['funk', 'all', 'library music', 'library', 'sonne immage']
                                        'tag_date'  1996
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1636917407.781969  (2021-11-14 20:16:47)
                             'size'  4403072