======================== unified (from filesystem) ========================
                                         'bitrate'  '180.481'
                                        'duration'  '223'
                                          'artist'  'Pearls Before Swine'
                                     'text_people'  ''
                                         'release'  'The Use of Ashes'
                                           'title'  'Tell Me Why'
                                           'quals'  ("['Q-HAP-3', 'Q-UNU-1', 'Q-LOCALNESS-1', 'Q-JZFKS-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-2', 'Q-PLAY-2', 'q-syn-2', 'q-bass-2', 'q-busy-2', 'q-grit-2', "
 "'q-chart-2', 'q-drums-1', 'q-other-3', 'q-vocals-4', 'q-mixbeat-1', "
 "'Q-PIANO-2']")
                                      'lastfmtags'  "['60s', 'psychedelic folk', 'acid folk', 'psychedelic', 'folk']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '6'
                                      'tracktotal'  '10'
                                            'date'  '1970'
                                        'comments'  ''
                                           'genre'  'ifs-songwriter'
                                             'bpm'  '145.895'
                                             'key'  '8A'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'TALB' (Album/Movie/Show title)                     'The Use of Ashes'
'TBPM' (BPM (beats per minute))                     '145.895'
'TCON' (Content type, a.k.a. Genre)                 'ifs-songwriter'
'TDRC' (Recording time)                             '1970'
'TIT2' (Title/songname/content description)         'Tell Me Why'
'TKEY' (Initial key)                                '8A'
'TPE1' (Lead performer(s)/Soloist(s))               'Pearls Before Swine'
'TPE2' (Band/orchestra/accompaniment)               'Pearls Before Swine'
'TPOS' (Part of a set)                              '1/1'
'TRCK' (Track number/Position in set)               '6/10'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-PIANO'                                      '2'
'TXXX:Q-PLAY'                                       '2'
'TXXX:Q-UNU'                                        '1'
'TXXX:acoustid_id'                                  'a544e344-e4d7-4243-9f68-fc9c9197958c'
'TXXX:albumartistsort'                              'Pearls Before Swine'
'TXXX:artistsort'                                   'Pearls Before Swine'
'TXXX:asin'                                         'B0000ZMH2Y'
'TXXX:lastfmtags'                                   ['60s', 'psychedelic folk', 'acid folk', 'psychedelic', 'folk']
'TXXX:musicbrainz_albumartistid'                    'e57364a4-9813-41d8-aba0-cd71d17907b5'
'TXXX:musicbrainz_albumid'                          'aafe2347-a6a0-464c-a81e-6d8030689ba9'
'TXXX:musicbrainz_artistid'                         'e57364a4-9813-41d8-aba0-cd71d17907b5'
'TXXX:musicbrainz_trackid'                          '22ff4a1c-5361-4730-b5d4-802e7e277d06'
'TXXX:originaldate'                                 '1970'
'TXXX:q-bass'                                       '2'
'TXXX:q-busy'                                       '2'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '3'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '4'
'TXXX:releasestatus'                                'official'
'TXXX:releasetype'                                  'album'
'TXXX:replaygain_track_gain'                        '+0.78 dB'
'TXXX:replaygain_track_peak'                        '0.638488'
'TXXX:script'                                       'Latn'

========================== row from database ==========================
                                              'id'  1108121
                                            'path'  /data/Music/Bulk/00singer-songwriter-eos/Pearls Before Swine/1970 - the use of ashes (2003 reissue)/06.Tell Me Why.mp3
                                         'working'  None
                                         'bitrate'  180
                                    'duration_sec'  223
                                           'genre'  ifs-songwriter
                                        'filesize'  5133369
                                           'mtime'  1623435949
                                   'redo_metaread'  0
                                        'rest_str'   00singer songwriter eos 1970 the use ashes (2003 reissue) 06.Tell ifs songwriter
                                      'tag_artist'  Pearls Before Swine
                                     'tag_release'  The Use of Ashes
                                       'tag_title'  Tell Me Why
                                             'bpm'  145.895
                                    'search_title'  'me':2 'tell':1 'why':3
                                   'search_artist'  'before':2 'pearls':1 'swine':3
                                  'search_release'  'ashes':4 'of':3 'the':1 'use':2
                                     'search_rest'  '00singer':1 '06':12 '06tell':14 '1970':4 '2003':8,9 'ashes':7 'eos':3 'ifs':15 'reissue':10,11 'songwriter':2 'tell':13 'the':5 'use':6
                                    'search_combo'  '00singer':11 '06':22 '06tell':24 '1970':14 '2003':18,19 'ashes':10C,17 'before':5B 'eos':13 'ifs':25 'me':2A 'of':9C 'pearls':4B 'reissue':20,21 'songwriter':12 'swine':6B 'tell':1A,23 'the':7C,15 'use':8C,16 'why':3A
                                    'tag_tracknum'  6
                                      'num_images'  1
                                             'key'  8A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-1', 'q-mixbeat-1', 'Q-PIANO-2', 'Q-OLDST-2', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-2', 'q-drums-1', 'q-syn-2', 'q-chart-2', 'q-other-3', 'Q-HAP-3', 'Q-PLAY-2', 'q-bass-2', 'q-grit-2']
                                      'lastfmtags'  ['60s', 'psychedelic folk', 'acid folk', 'psychedelic', 'folk']
                                        'tag_date'  1970
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1623435949.1572373  (2021-06-11 20:25:49)
                             'size'  5133369