======================== unified (from filesystem) ========================
                                         'bitrate'  '252.281'
                                        'duration'  '185'
                                          'artist'  'Cat Power'
                                     'text_people'  ''
                                         'release'  'You Are Free'
                                           'title'  "I Don't Blame You"
                                           'quals'  ("['Q-HAP-3', 'Q-LOCALNESS-1', 'Q-UNU-1', 'Q-OLDST-3', 'Q-JZFKS-1', "
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 "'q-chart-4', 'q-drums-1', 'q-other-1', 'q-vocals-3', 'q-mixbeat-1', "
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                                      'lastfmtags'  "['indie', 'alternative', 'female vocalists', 'folk', 'singer songwriter']"
                                     'discogstags'  "['rock', 'indie rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '1'
                                      'tracktotal'  ''
                                            'date'  '2003'
                                        'comments'  ''
                                           'genre'  'ifs-songwriter-eos'
                                             'bpm'  '103.642'
                                             'key'  '8B'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'You Are Free'
'TBPM' (BPM (beats per minute))                     '103.642'
'TCON' (Content type, a.k.a. Genre)                 'ifs-songwriter-eos'
'TDRC' (Recording time)                             '2003'
'TIT2' (Title/songname/content description)         "I Don't Blame You"
'TKEY' (Initial key)                                '8B'
'TPE1' (Lead performer(s)/Soloist(s))               'Cat Power'
'TRCK' (Track number/Position in set)               '1'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-PIANO'                                      '4'
'TXXX:Q-PLAY'                                       '2'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  ['rock', 'indie rock']
'TXXX:lastfmtags'                                   ['indie', 'alternative', 'female vocalists', 'folk', 'singer songwriter']
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '4'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '1'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '+1.26 dB'
'TXXX:replaygain_track_peak'                        '0.482916'

========================== row from database ==========================
                                              'id'  1512242
                                            'path'  /data/Music/Bulk/00singer-songwriter-eos/Cat Power/You Are Free/01-I_Don_t_Blame_You.mp3
                                         'working'  None
                                         'bitrate'  252
                                    'duration_sec'  185
                                           'genre'  ifs-songwriter-eos
                                        'filesize'  5863666
                                           'mtime'  1620645122
                                   'redo_metaread'  0
                                        'rest_str'   00singer songwriter eos 01 I_Don_t_Blame_You ifs songwriter eos
                                      'tag_artist'  Cat Power
                                     'tag_release'  You Are Free
                                       'tag_title'  I Don't Blame You
                                             'bpm'  103.642
                                    'search_title'  'blame':5 'don':2 'dont':4 'i':1 't':3 'you':6
                                   'search_artist'  'cat':1 'power':2
                                  'search_release'  'are':2 'free':3 'you':1
                                     'search_rest'  '00singer':1 'blame':7 'don':5 'eos':3 'i':4 'ifs':9 'songwriter':2 't':6 'you':8
                                    'search_combo'  '00singer':12 'are':10C 'blame':5A,18 'cat':7B 'don':2A,16 'dont':4A 'eos':14 'free':11C 'i':1A,15 'ifs':20 'power':8B 'songwriter':13 't':3A,17 'you':6A,9C,19
                                    'tag_tracknum'  1
                                      'num_images'  0
                                             'key'  8B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-1', 'q-mixbeat-1', 'Q-PIANO-4', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-1', 'q-syn-2', 'q-chart-4', 'q-other-1', 'Q-HAP-3', 'Q-PLAY-2', 'q-bass-1', 'q-grit-2']
                                      'lastfmtags'  ['indie', 'alternative', 'female vocalists', 'folk', 'singer songwriter']
                                        'tag_date'  2003
                                     'discogstags'  ['rock', 'indie rock']

============================== file details ==============================
                                           'mtime'  1620645121.5503514  (2021-05-10 13:12:01)
                             'size'  5863666