======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '144'
                                          'artist'  'John Lennon'
                                     'text_people'  'John Lennon'
                                         'release'  'Imagine'
                                           'title'  "It's So Hard"
                                           'quals'  ("['Q-HAP-2', 'Q-LOCALNESS-1', 'Q-UNU-1', 'Q-JZFKS-1', 'Q-HHRNBTT-1', "
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 "'q-chart-4', 'q-drums-3', 'q-other-3', 'q-piano-1', 'q-vocals-2', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['rock', 'singer songwriter', 'pop', 'british', 'classic rock']"
                                     'discogstags'  "['rock', 'pop', 'rock & roll', 'pop rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '4'
                                      'tracktotal'  ''
                                            'date'  '1971'
                                        'comments'  ''
                                           'genre'  'ifs-songwriter'
                                             'bpm'  '84.0'
                                             'key'  '11B'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'COMM::eng'                                         '20130213'
'COMM:iTunNORM:eng'                                 ('00000F95 00001132 00010BAD 0000AAE8 0001D14E 0000097D 000084C6 0000809B '
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'COMM:iTunPGAP:eng'                                 '0'
'COMM:iTunSMPB:eng'                                 (' 00000000 00000210 00000864 0000000000617B8C 00000000 002354E6 00000000 '
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'RVA2:album'                                        RVA2(desc='album', channel=1, gain=0.0, peak=0.0)
'RVA2:track'                                        RVA2(desc='track', channel=1, gain=0.0, peak=0.0)
'TALB' (Album/Movie/Show title)                     'Imagine'
'TBPM' (BPM (beats per minute))                     '84.0'
'TCMP'                                              '0'
'TCOM' (Composer)                                   'John Lennon'
'TCON' (Content type, a.k.a. Genre)                 'ifs-songwriter'
'TDRC' (Recording time)                             '1971'
'TENC' (Encoded by)                                 'iTunes v7.5'
'TIT2' (Title/songname/content description)         "It's So Hard"
'TKEY' (Initial key)                                '11B'
'TPE1' (Lead performer(s)/Soloist(s))               'John Lennon'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TRCK' (Track number/Position in set)               '4'
'TXXX:Q-HAP'                                        '2'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  ['rock', 'pop', 'rock & roll', 'pop rock']
'TXXX:lastfmtags'                                   ['rock', 'singer songwriter', 'pop', 'british', 'classic rock']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '4'
'TXXX:q-drums'                                      '3'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '2'
'TXXX:replaygain_track_gain'                        '+0.47 dB'
'TXXX:replaygain_track_peak'                        '0.459628'

========================== row from database ==========================
                                              'id'  1512896
                                            'path'  /data/Music/Bulk/00singer-songwriter-eos/John Lennon - Imagine/04 It_s So Hard.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  144
                                           'genre'  ifs-songwriter
                                        'filesize'  2439684
                                           'mtime'  1637330794
                                   'redo_metaread'  0
                                        'rest_str'   00singer songwriter eos 04 It_s ifs songwriter
                                      'tag_artist'  John Lennon
                                     'tag_release'  Imagine
                                       'tag_title'  It's So Hard
                                             'bpm'  84.0
                                    'search_title'  'hard':5 'it':1 'its':3 's':2 'so':4
                                   'search_artist'  'john':1 'lennon':2
                                  'search_release'  'imagine':1
                                     'search_rest'  '00singer':1 'eos':3 'ifs':6 'it':4 's':5 'songwriter':2
                                    'search_combo'  '00singer':9 'eos':11 'hard':5A 'ifs':14 'imagine':8C 'it':1A,12 'its':3A 'john':6B 'lennon':7B 's':2A,13 'so':4A 'songwriter':10
                                    'tag_tracknum'  4
                                      'num_images'  1
                                             'key'  11B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-2', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-2', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-3', 'q-syn-2', 'q-chart-4', 'q-other-3', 'Q-HAP-2', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['rock', 'singer songwriter', 'pop', 'british', 'classic rock']
                                        'tag_date'  1971
                                     'discogstags'  ['rock', 'pop', 'rock & roll', 'pop rock']

============================== file details ==============================
                                           'mtime'  1637330793.6777608  (2021-11-19 15:06:33)
                             'size'  2439684