======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '275'
                                          'artist'  'Yellow Magic Orchestra'
                                     'text_people'  ''
                                         'release'  'YMO Go Home!'
                                           'title'  'Citizens of Science'
                                           'quals'  ("['Q-HAP-2', 'Q-UNU-1', 'Q-HHRNBTT-1', 'Q-JZFKS-1', 'Q-OLDST-3', "
 "'Q-LOCALNESS-1', 'q-syn-2', 'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-3', "
 "'q-chart-2', 'q-drums-4', 'q-other-2', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-3']")
                                      'lastfmtags'  "['electronica', 'techno', 'electronic', 'japanese', 'synthpop']"
                                     'discogstags'  "['electronic', 'electro', 'synth-pop']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '4'
                                      'tracktotal'  '14'
                                            'date'  '2000'
                                        'comments'  ''
                                           'genre'  'electronic-th-techno'
                                             'bpm'  '99.812'
                                             'key'  '9A'
                                        'acoustid'  ''
rest: ''

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

'APIC:Cover Image'                                  type PictureType.COVER_FRONT (Cover (front)) b'Cover Image'
                                     
'COMM:iTunNORM:eng'                                 (' 00000E20 00000E92 000075C0 000060EA 0001CA3B 0001B82E 00008000 00008000 '
 '000032B3 0002C878')
'TALB' (Album/Movie/Show title)                     'YMO Go Home!'
'TBPM' (BPM (beats per minute))                     '99.812'
'TCON' (Content type, a.k.a. Genre)                 'electronic-th-techno'
'TDRC' (Recording time)                             '2000'
'TIT2' (Title/songname/content description)         'Citizens of Science'
'TKEY' (Initial key)                                '9A'
'TPE1' (Lead performer(s)/Soloist(s))               'Yellow Magic Orchestra'
'TPOS' (Part of a set)                              '2/2'
'TRCK' (Track number/Position in set)               '4/14'
'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', 'electro', 'synth-pop']
'TXXX:lastfmtags'                                   ['electronica', 'techno', 'electronic', 'japanese', 'synthpop']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '3'
'TXXX:q-other'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '-0.30 dB'
'TXXX:replaygain_track_peak'                        '0.457675'

========================== row from database ==========================
                                              'id'  1309542
                                            'path'  /data/Music/Bulk/00poprockelectronic/Unsorted/[loose files]/2-04 citizens of science.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  275
                                           'genre'  electronic-th-techno
                                        'filesize'  4476714
                                           'mtime'  1620572665
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic Unsorted [loose files] 2 04 citizens science electronic th techno
                                      'tag_artist'  Yellow Magic Orchestra
                                     'tag_release'  YMO Go Home!
                                       'tag_title'  Citizens of Science
                                             'bpm'  99.812
                                    'search_title'  'citizens':1 'of':2 'science':3
                                   'search_artist'  'magic':2 'orchestra':3 'yellow':1
                                  'search_release'  'go':2 'home':3 'ymo':1
                                     'search_rest'  '00poprockelectronic':1 '2':7 'citizens':8 'electronic':10 'files':5,6 'loose':3,4 'science':9 'techno':12 'th':11 'unsorted':2
                                    'search_combo'  '00poprockelectronic':10 '2':16 'citizens':1A,17 'electronic':19 'files':14,15 'go':8C 'home':9C 'loose':12,13 'magic':5B 'of':2A 'orchestra':6B 'science':3A,18 'techno':21 'th':20 'unsorted':11 'yellow':4B 'ymo':7C
                                    'tag_tracknum'  4
                                      'num_images'  1
                                             'key'  9A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', '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-2', 'q-chart-2', 'q-other-2', 'Q-HAP-2', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['electronica', 'techno', 'electronic', 'japanese', 'synthpop']
                                        'tag_date'  2000
                                     'discogstags'  ['electronic', 'electro', 'synth-pop']

============================== file details ==============================
                                           'mtime'  1620572664.5859272  (2021-05-09 17:04:24)
                             'size'  4476714