======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '123'
                                          'artist'  'The Searchers'
                                     'text_people'  ''
                                         'release'  'Hits Collection'
                                           'title'  'Love Potion No. 9'
                                           'quals'  ("['Q-JZFKS-1', 'Q-UNU-1', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', 'Q-OLDST-2', "
 "'q-syn-2', '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-3', 'q-mixbeat-2']")
                                      'lastfmtags'  "['60s', 'oldies', 'british', 'pop', 'rock', 'classic rock']"
                                     'discogstags'  "['pop']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '7'
                                      'tracktotal'  '15'
                                            'date'  '1965'
                                        'comments'  ''
                                           'genre'  'rock-cppex'
                                             'bpm'  '125.160'
                                             'key'  '11B'
                                        'acoustid'  ''
rest: ''

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

'APIC:Cover Image'                                  type PictureType.COVER_FRONT (Cover (front)) b'Cover Image'
                                     
'COMM:ID3v1 Comment:XXX'                            'Halloween; Driving; Party'
'COMM:Songs-DB_Custom1:eng'                         '1960s'
'COMM:Songs-DB_Custom2:eng'                         'Oldies; Oldie; Male Vocalists; Covers'
'COMM:Songs-DB_Custom3:eng'                         'British; Liverpool'
'COMM:Songs-DB_Occasion:eng'                        'Halloween; Driving; Party'
'POPM:Windows Media Player 9 Series'                POPM(email='Windows Media Player 9 Series', rating=128, count=0)
'TALB' (Album/Movie/Show title)                     'Hits Collection'
'TBPM' (BPM (beats per minute))                     '125.160'
'TCON' (Content type, a.k.a. Genre)                 'rock-cppex'
'TDOR' (Original release time)                      '1965'
'TDRC' (Recording time)                             '1965'
'TIT2' (Title/songname/content description)         'Love Potion No. 9'
'TKEY' (Initial key)                                '11B'
'TPE1' (Lead performer(s)/Soloist(s))               'The Searchers'
'TPE2' (Band/orchestra/accompaniment)               'The Searchers'
'TPUB' (Publisher)                                  'PRT Records'
'TRCK' (Track number/Position in set)               '7/15'
'TSOP' (Performer sort order)                       'Searchers, The'
'TXXX:ALBUMARTISTSORT'                              'Searchers, The'
'TXXX:ASIN'                                         'B0001BS3WA'
'TXXX:BARCODE'                                      '5011664400216'
'TXXX:CATALOGNUMBER'                                'PYL4002'
'TXXX:FMPS_Rating'                                  '0.6'
'TXXX:MP3GAIN_MINMAX'                               '112,181'
'TXXX:MusicBrainz Album Artist Id'                  'a9399880-5587-457c-bc87-8c81fcf57cb1'
'TXXX:MusicBrainz Album Id'                         'ed073272-0703-46d8-acae-85a43400540e'
'TXXX:MusicBrainz Album Release Country'            'GB'
'TXXX:MusicBrainz Album Status'                     'official'
'TXXX:MusicBrainz Album Type'                       'compilation'
'TXXX:MusicBrainz Artist Id'                        'a9399880-5587-457c-bc87-8c81fcf57cb1'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  'pop'
'TXXX:lastfmtags'                                   ['60s', 'oldies', 'british', 'pop', 'rock', 'classic rock']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '3'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '2'
'TXXX:q-other'                                      '1'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '-1.27 dB'
'TXXX:replaygain_track_peak'                        '0.661678'

========================== row from database ==========================
                                              'id'  1288681
                                            'path'  /data/Music/Bulk/00poprockelectronic/Unsorted/[loose files]/The Searchers - Hits Collection - cifs9ebe.mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  123
                                           'genre'  rock-cppex
                                        'filesize'  2995252
                                           'mtime'  1620737437
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic Unsorted [loose files] cifs9ebe rock cppex
                                      'tag_artist'  The Searchers
                                     'tag_release'  Hits Collection
                                       'tag_title'  Love Potion No. 9
                                             'bpm'  125.16
                                    'search_title'  '9':5 'love':1 'no':3,4 'potion':2
                                   'search_artist'  'searchers':2 'the':1
                                  'search_release'  'collection':2 'hits':1
                                     'search_rest'  '00poprockelectronic':1 'cifs9ebe':7 'cppex':9 'files':5,6 'loose':3,4 'rock':8 'unsorted':2
                                    'search_combo'  '00poprockelectronic':10 '9':5A 'cifs9ebe':16 'collection':9C 'cppex':18 'files':14,15 'hits':8C 'loose':12,13 'love':1A 'no':3A,4A 'potion':2A 'rock':17 'searchers':7B 'the':6B 'unsorted':11
                                    'tag_tracknum'  7
                                      'num_images'  1
                                             'key'  11B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-2', 'q-play-3', 'Q-OLDST-2', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-4', 'q-syn-2', 'q-chart-3', 'q-other-1', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['60s', 'oldies', 'british', 'pop', 'rock', 'classic rock']
                                        'tag_date'  1965
                                     'discogstags'  ['pop']

============================== file details ==============================
                                           'mtime'  1620737437.2152667  (2021-05-11 14:50:37)
                             'size'  2995252