======================== unified (from filesystem) ========================
                                         'bitrate'  '307.505'
                                        'duration'  '371'
                                          'artist'  'Tiga'
                                     'text_people'  ''
                                         'release'  'Ciao!'
                                           'title'  'Overtime'
                                           'quals'  ("['Q-HAP-3', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', 'Q-JZFKS-1', 'Q-OLDST-3', "
 "'Q-UNU-1', 'q-syn-3', 'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-3', "
 "'q-chart-3', 'q-drums-4', 'q-other-1', 'q-piano-1', 'q-vocals-1', "
 "'q-mixbeat-3']")
                                      'lastfmtags'  "['dance', 'house', 'electroclash', 'electro', 'electronic']"
                                     'discogstags'  "['electronic', 'house', 'electro']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '7'
                                      'tracktotal'  ''
                                            'date'  '2009'
                                        'comments'  ''
                                           'genre'  'electronic-generic or radio-dance'
                                             'bpm'  '127.927'
                                             'key'  '10A'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'COMM:ID3v1 Comment:XXX'                            '0'
'COMM:iTunNORM:eng'                                 (' 00000F6F 00000D9B 0001E29F 0001B04D 0000C3D0 00006BDB 00009277 000091FA '
 '00033278 00030AAC')
'COMM:iTunPGAP:eng'                                 '0'
'COMM:iTunSMPB:eng'                                 (' 00000000 00000210 00000AC8 0000000000F9E928 00000000 00D9C932 00000000 '
 '00000000 00000000 00000000 00000000 00000000')
'TALB' (Album/Movie/Show title)                     'Ciao!'
'TBPM' (BPM (beats per minute))                     '127.927'
'TCON' (Content type, a.k.a. Genre)                 'electronic-generic or radio-dance'
'TDRC' (Recording time)                             '2009'
'TENC' (Encoded by)                                 'iTunes 8.1'
'TIT2' (Title/songname/content description)         'Overtime'
'TKEY' (Initial key)                                '10A'
'TPE1' (Lead performer(s)/Soloist(s))               'Tiga'
'TRCK' (Track number/Position in set)               '7'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  ['electronic', 'house', 'electro']
'TXXX:lastfmtags'                                   ['dance', 'house', 'electroclash', 'electro', 'electronic']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '3'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '3'
'TXXX:q-other'                                      '1'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '3'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '-0.98 dB'
'TXXX:replaygain_track_peak'                        '0.417758'

========================== row from database ==========================
                                              'id'  1312125
                                            'path'  /data/Music/Bulk/00poprockelectronic/Tiga/Ciao/07 Overtime.mp3
                                         'working'  None
                                         'bitrate'  307
                                    'duration_sec'  371
                                           'genre'  electronic-generic or radio-dance
                                        'filesize'  14503635
                                           'mtime'  1621696661
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic 07 electronic generic or radio dance
                                      'tag_artist'  Tiga
                                     'tag_release'  Ciao!
                                       'tag_title'  Overtime
                                             'bpm'  127.927
                                    'search_title'  'overtime':1
                                   'search_artist'  'tiga':1
                                  'search_release'  'ciao':1
                                     'search_rest'  '00poprockelectronic':1 'dance':6 'electronic':2 'generic':3 'or':4 'radio':5
                                    'search_combo'  '00poprockelectronic':4 'ciao':3C 'dance':9 'electronic':5 'generic':6 'or':7 'overtime':1A 'radio':8 'tiga':2B
                                    'tag_tracknum'  7
                                      'num_images'  1
                                             'key'  10A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-3', 'q-play-3', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-4', 'q-syn-3', 'q-chart-3', 'q-other-1', 'Q-HAP-3', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['dance', 'house', 'electroclash', 'electro', 'electronic']
                                        'tag_date'  2009
                                     'discogstags'  ['electronic', 'house', 'electro']

============================== file details ==============================
                                           'mtime'  1621696660.7624836  (2021-05-22 17:17:40)
                             'size'  14503635