======================== unified (from filesystem) ========================
                                         'bitrate'  '256.0'
                                        'duration'  '477'
                                          'artist'  'Fluke'
                                     'text_people'  ''
                                         'release'  'Wipeout 2097'
                                           'title'  'Atom Bomb'
                                           '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-2', "
 "'q-chart-2', 'q-drums-4', 'q-other-2', 'q-piano-1', 'q-vocals-1', "
 "'q-mixbeat-3']")
                                      'lastfmtags'  "['electronica', 'dance', 'techno', 'electronic', 'big beat']"
                                     'discogstags'  "['electronic']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '2'
                                      'tracktotal'  '14'
                                            'date'  '1996'
                                        'comments'  ''
                                           'genre'  'electronic-th-techno'
                                             'bpm'  '110.062'
                                             'key'  '1A'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'COMM:ID3v1 Comment:XXX'                            ' 000006B4 000007AF 00004E45'
'COMM:iTunNORM:eng'                                 (' 000006B4 000007AF 00004E45 00006166 00065EBF 00019C27 00008000 00008000 '
 '000111A6 000111A6')
'TALB' (Album/Movie/Show title)                     'Wipeout 2097'
'TBPM' (BPM (beats per minute))                     '110.062'
'TCON' (Content type, a.k.a. Genre)                 'electronic-th-techno'
'TDRC' (Recording time)                             '1996'
'TIT2' (Title/songname/content description)         'Atom Bomb'
'TKEY' (Initial key)                                '1A'
'TPE1' (Lead performer(s)/Soloist(s))               'Fluke'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TPOS' (Part of a set)                              '1/1'
'TRCK' (Track number/Position in set)               '2/14'
'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'
'TXXX:lastfmtags'                                   ['electronica', 'dance', 'techno', 'electronic', 'big beat']
'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'                                       '2'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '+0.42 dB'
'TXXX:replaygain_track_peak'                        '0.544875'

========================== row from database ==========================
                                              'id'  1361298
                                            'path'  /data/Music/Bulk/00poprockelectronic/Unsorted/[loose files]/atom bomb.mp3
                                         'working'  None
                                         'bitrate'  256
                                    'duration_sec'  477
                                           'genre'  electronic-th-techno
                                        'filesize'  15322814
                                           'mtime'  1620573084
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic Unsorted [loose files] atom bomb electronic th techno
                                      'tag_artist'  Fluke
                                     'tag_release'  Wipeout 2097
                                       'tag_title'  Atom Bomb
                                             'bpm'  110.062
                                    'search_title'  'atom':1 'bomb':2
                                   'search_artist'  'fluke':1
                                  'search_release'  '2097':2 'wipeout':1
                                     'search_rest'  '00poprockelectronic':1 'atom':7 'bomb':8 'electronic':9 'files':5,6 'loose':3,4 'techno':11 'th':10 'unsorted':2
                                    'search_combo'  '00poprockelectronic':6 '2097':5C 'atom':1A,12 'bomb':2A,13 'electronic':14 'files':10,11 'fluke':3B 'loose':8,9 'techno':16 'th':15 'unsorted':7 'wipeout':4C
                                    'tag_tracknum'  2
                                      'num_images'  1
                                             'key'  1A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-3', '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-2', 'Q-HAP-2', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['electronica', 'dance', 'techno', 'electronic', 'big beat']
                                        'tag_date'  1996
                                     'discogstags'  ['electronic']

============================== file details ==============================
                                           'mtime'  1620573084.0577123  (2021-05-09 17:11:24)
                             'size'  15322814