======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '313'
                                          'artist'  'Scorpions'
                                     'text_people'  ''
                                         'release'  'Best'
                                           'title'  'Wind of Change'
                                           'quals'  ("['Q-JZFKS-1', 'Q-UNU-1', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', 'Q-OLDST-3', "
 "'q-syn-2', 'q-bass-3', 'q-busy-3', 'q-grit-2', 'q-play-3', 'q-chart-3', "
 "'q-drums-3', 'q-other-3', 'q-piano-1', 'q-vocals-3', 'q-mixbeat-2']")
                                      'lastfmtags'  "['heavy metal', '80s', 'rock', 'hard rock', 'classic rock']"
                                     'discogstags'  "['rock', 'hard rock', 'arena rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '3'
                                      'tracktotal'  '17'
                                            'date'  '1988'
                                        'comments'  ''
                                           'genre'  'rock-cppex'
                                             'bpm'  '143.314'
                                             'key'  '9A'
                                        'acoustid'  ''
rest: ''

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

'APIC:Cover Image'                                  type PictureType.COVER_FRONT (Cover (front)) b'Cover Image'
                                     
'COMM:ID3v1 Comment:XXX'                            'Love; Romantic; Chillout'
'COMM:Songs-DB_Custom1:eng'                         '1980s'
'COMM:Songs-DB_Custom2:eng'                         'Ballad; Oldies; Beautiful; Political'
'COMM:Songs-DB_Custom3:eng'                         'German'
'COMM:Songs-DB_Occasion:eng'                        'Love; Romantic; Chillout'
'POPM:Windows Media Player 9 Series'                POPM(email='Windows Media Player 9 Series', rating=128, count=0)
'TALB' (Album/Movie/Show title)                     'Best'
'TBPM' (BPM (beats per minute))                     '143.314'
'TCON' (Content type, a.k.a. Genre)                 'rock-cppex'
'TDOR' (Original release time)                      '1988'
'TDRC' (Recording time)                             '1988'
'TIT2' (Title/songname/content description)         'Wind of Change'
'TKEY' (Initial key)                                '9A'
'TPE1' (Lead performer(s)/Soloist(s))               'Scorpions'
'TPE2' (Band/orchestra/accompaniment)               'Scorpions'
'TRCK' (Track number/Position in set)               '3/17'
'TSOP' (Performer sort order)                       'Scorpions'
'TXXX:ALBUMARTISTSORT'                              'Scorpions'
'TXXX:ASIN'                                         'B000026K7H'
'TXXX:FMPS_Rating'                                  '0.6'
'TXXX:MusicBrainz Album Artist Id'                  'c3cceeed-3332-4cf0-8c4c-bbde425147b6'
'TXXX:MusicBrainz Album Id'                         'f7210344-bbdd-49b4-bc67-fa27beec4b36'
'TXXX:MusicBrainz Album Release Country'            'DE'
'TXXX:MusicBrainz Album Status'                     'official'
'TXXX:MusicBrainz Album Type'                       'compilation'
'TXXX:MusicBrainz Artist Id'                        'c3cceeed-3332-4cf0-8c4c-bbde425147b6'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  ['rock', 'hard rock', 'arena rock']
'TXXX:lastfmtags'                                   ['heavy metal', '80s', 'rock', 'hard rock', 'classic rock']
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '3'
'TXXX:q-drums'                                      '3'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '2'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '+0.75 dB'
'TXXX:replaygain_track_peak'                        '0.572037'

========================== row from database ==========================
                                              'id'  1325473
                                            'path'  /data/Music/Bulk/00poprockelectronic/Unsorted/[loose files]/Scorpions__cifs10ab.mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  313
                                           'genre'  rock-cppex
                                        'filesize'  7549865
                                           'mtime'  1620737431
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic Unsorted [loose files] Scorpions__cifs10ab rock cppex
                                      'tag_artist'  Scorpions
                                     'tag_release'  Best
                                       'tag_title'  Wind of Change
                                             'bpm'  143.314
                                    'search_title'  'change':3 'of':2 'wind':1
                                   'search_artist'  'scorpions':1
                                  'search_release'  'best':1
                                     'search_rest'  '00poprockelectronic':1 'cifs10ab':8 'cppex':10 'files':5,6 'loose':3,4 'rock':9 'scorpions':7 'unsorted':2
                                    'search_combo'  '00poprockelectronic':6 'best':5C 'change':3A 'cifs10ab':13 'cppex':15 'files':10,11 'loose':8,9 'of':2A 'rock':14 'scorpions':4B,12 'unsorted':7 'wind':1A
                                    'tag_tracknum'  3
                                      'num_images'  1
                                             'key'  9A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-2', 'q-play-3', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-3', 'q-syn-2', 'q-chart-3', 'q-other-3', 'q-bass-3', 'q-grit-2']
                                      'lastfmtags'  ['heavy metal', '80s', 'rock', 'hard rock', 'classic rock']
                                        'tag_date'  1988
                                     'discogstags'  ['rock', 'hard rock', 'arena rock']

============================== file details ==============================
                                           'mtime'  1620737430.5880427  (2021-05-11 14:50:30)
                             'size'  7549865