======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '248'
                                          'artist'  'E-Type'
                                     'text_people'  ''
                                         'release'  'Loud Pipes Save Lives'
                                           'title'  'Rain'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-UNU-1', 'Q-HHRNBTT-1', 'Q-LOCALNESS-1', "
 "'Q-OLDST-3', '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-3', "
 "'q-mixbeat-3']")
                                      'lastfmtags'  "['dance', 'eurodance', 'swedish', 'electronic', 'pop']"
                                     'discogstags'  "['electronic', 'hi nrg', 'euro house']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '9'
                                      'tracktotal'  '11'
                                            'date'  '2004'
                                        'comments'  ''
                                           'genre'  'electronic-unsorted'
                                             'bpm'  '138.987'
                                             'key'  '8A'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'COMM:ID3v1 Comment:XXX'                            ' 00001B92 00001AEA 0000A1C1'
'COMM:iTunNORM:eng'                                 (' 00001B92 00001AEA 0000A1C1 00007C53 0001CCAE 0001CCAE 00008000 00008000 '
 '00003AF4 00003DF3')
'TALB' (Album/Movie/Show title)                     'Loud Pipes Save Lives'
'TBPM' (BPM (beats per minute))                     '138.987'
'TCON' (Content type, a.k.a. Genre)                 'electronic-unsorted'
'TDRC' (Recording time)                             '2004'
'TIT2' (Title/songname/content description)         'Rain'
'TKEY' (Initial key)                                '8A'
'TPE1' (Lead performer(s)/Soloist(s))               'E-Type'
'TPE2' (Band/orchestra/accompaniment)               'E-Type'
'TPOS' (Part of a set)                              '1/1'
'TRCK' (Track number/Position in set)               '9/11'
'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', 'hi nrg', 'euro house']
'TXXX:lastfmtags'                                   ['dance', 'eurodance', 'swedish', 'electronic', 'pop']
'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'                                     '3'
'TXXX:replaygain_track_gain'                        '-1.10 dB'
'TXXX:replaygain_track_peak'                        '0.427404'

========================== row from database ==========================
                                              'id'  1291832
                                            'path'  /data/Music/Bulk/00poprockelectronic/Unsorted/[loose files]/e-type - rain.mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  248
                                           'genre'  electronic-unsorted
                                        'filesize'  6004472
                                           'mtime'  1621696807
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic Unsorted [loose files] type rain electronic unsorted
                                      'tag_artist'  E-Type
                                     'tag_release'  Loud Pipes Save Lives
                                       'tag_title'  Rain
                                             'bpm'  138.987
                                    'search_title'  'rain':1
                                   'search_artist'  'e':1 'etype':3 'type':2
                                  'search_release'  'lives':4 'loud':1 'pipes':2 'save':3
                                     'search_rest'  '00poprockelectronic':1 'electronic':9 'files':5,6 'loose':3,4 'rain':8 'type':7 'unsorted':2
                                    'search_combo'  '00poprockelectronic':9 'e':2B 'electronic':17 'etype':4B 'files':13,14 'lives':8C 'loose':11,12 'loud':5C 'pipes':6C 'rain':1A,16 'save':7C 'type':3B,15 'unsorted':10
                                    'tag_tracknum'  9
                                      'num_images'  1
                                             'key'  8A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', '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-3', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['dance', 'eurodance', 'swedish', 'electronic', 'pop']
                                        'tag_date'  2004
                                     'discogstags'  ['electronic', 'hi nrg', 'euro house']

============================== file details ==============================
                                           'mtime'  1621696807.3379202  (2021-05-22 17:20:07)
                             'size'  6004472