======================== unified (from filesystem) ========================
                                         'bitrate'  '256.0'
                                        'duration'  '454'
                                          'artist'  'Inner City'
                                     'text_people'  ''
                                         'release'  'Acid house fever'
                                           'title'  'Good life'
                                           'quals'  ("['Q-HAP-2', 'Q-UNU-1', 'Q-HHRNBTT-1', 'Q-JZFKS-1', 'Q-OLDST-3', "
 "'Q-LOCALNESS-1', 'q-syn-2', 'q-bass-3', 'q-busy-3', 'q-grit-2', 'q-play-2', "
 "'q-chart-2', 'q-drums-4', 'q-other-1', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-2']")
                                      'lastfmtags'  "['dance', 'house', '80s', 'techno', 'detroit techno']"
                                     'discogstags'  "['electronic']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '1'
                                      'tracktotal'  '11'
                                            'date'  '1988'
                                        'comments'  ''
                                           'genre'  'electronic-th-techno'
                                             'bpm'  '125.548'
                                             'key'  '6A'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'COMM::eng'                                         'Cleaned by TuneUp!'
'COMM:ID3v1 Comment:XXX'                            'Cleaned by TuneUp!'
'COMM:iTunNORM:eng'                                 (' 00000330 000003C6 00002FF5 00002FE1 00042292 00042292 000070A2 00008066 '
 '000424B6 000084C1')
'TALB' (Album/Movie/Show title)                     'Acid house fever'
'TBPM' (BPM (beats per minute))                     '125.548'
'TCON' (Content type, a.k.a. Genre)                 'electronic-th-techno'
'TDRC' (Recording time)                             '1988'
'TENC' (Encoded by)                                 'iTunes v4.1'
'TIT2' (Title/songname/content description)         'Good life'
'TKEY' (Initial key)                                '6A'
'TPE1' (Lead performer(s)/Soloist(s))               'Inner City'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TPOS' (Part of a set)                              '1/1'
'TRCK' (Track number/Position in set)               '1/11'
'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:discogstags'                                  'electronic'
'TXXX:lastfmtags'                                   ['dance', 'house', '80s', 'techno', 'detroit techno']
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '2'
'TXXX:q-other'                                      '1'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '+0.47 dB'
'TXXX:replaygain_track_peak'                        '0.693103'

========================== row from database ==========================
                                              'id'  1491729
                                            'path'  /data/Music/Bulk/00localcharacter/00mid-north-europe/00dutch/inner city - good life (original mix).mp3
                                         'working'  None
                                         'bitrate'  256
                                    'duration_sec'  454
                                           'genre'  electronic-th-techno
                                        'filesize'  14581365
                                           'mtime'  1620592447
                                   'redo_metaread'  0
                                        'rest_str'   00localcharacter 00mid north europe 00dutch inner city good (original mix) electronic th techno
                                      'tag_artist'  Inner City
                                     'tag_release'  Acid house fever
                                       'tag_title'  Good life
                                             'bpm'  125.548
                                    'search_title'  'good':1 'life':2
                                   'search_artist'  'city':2 'inner':1
                                  'search_release'  'acid':1 'fever':3 'house':2
                                     'search_rest'  '00dutch':4 '00mid':1 'city':6 'electronic':12 'europe':3 'good':7 'inner':5 'mix':10,11 'north':2 'original':8,9 'techno':14 'th':13
                                    'search_combo'  '00dutch':11 '00mid':8 'acid':5C 'city':4B,13 'electronic':19 'europe':10 'fever':7C 'good':1A,14 'house':6C 'inner':3B,12 'life':2A 'mix':17,18 'north':9 'original':15,16 'techno':21 'th':20
                                    'tag_tracknum'  1
                                      'num_images'  1
                                             'key'  6A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-2', 'q-play-2', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-4', 'q-syn-2', 'q-chart-2', 'q-other-1', 'Q-HAP-2', 'q-bass-3', 'q-grit-2']
                                      'lastfmtags'  ['dance', 'house', '80s', 'techno', 'detroit techno']
                                        'tag_date'  1988
                                     'discogstags'  ['electronic']

============================== file details ==============================
                                           'mtime'  1620592447.403777  (2021-05-09 22:34:07)
                             'size'  14581365