======================== unified (from filesystem) ========================
                                         'bitrate'  '159.039'
                                        'duration'  '177'
                                          'artist'  'Otis Redding'
                                     'text_people'  ''
                                         'release'  'Sings Soul Ballads'
                                           'title'  'For Your Precious Love'
                                           'quals'  ("['Q-HAP-3', 'Q-LOCALNESS-1', 'Q-HHRNBTT-2', 'Q-UNU-1', 'Q-JZFKS-3', "
 "'Q-OLDST-2', 'q-syn-2', 'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-2', "
 "'q-chart-4', 'q-drums-2', 'q-other-3', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['oldies', 'blues', 'rhythm and blues', 'soul', '60s']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '7'
                                      'tracktotal'  '12'
                                            'date'  '1964'
                                        'comments'  ''
                                           'genre'  'funk or soul-soul'
                                             'bpm'  '122.437'
                                             'key'  '8A'
                                        'acoustid'  ''
rest: ''

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

'COMM:CDDB Disc ID:XXX'                             '8907F80C'
'COMM:ID3v1 Comment:XXX'                            '8907F80C'
'TALB' (Album/Movie/Show title)                     'Sings Soul Ballads'
'TBPM' (BPM (beats per minute))                     '122.437'
'TCON' (Content type, a.k.a. Genre)                 'funk or soul-soul'
'TDRC' (Recording time)                             '1964'
'TIT2' (Title/songname/content description)         'For Your Precious Love'
'TKEY' (Initial key)                                '8A'
'TPE1' (Lead performer(s)/Soloist(s))               'Otis Redding'
'TRCK' (Track number/Position in set)               '7/12'
'TSSE' (Software/Hardware and settings used for encoding)  'Audiograbber 1.80, LAME dll 3.89, VBR 3, Stereo, High quality'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '2'
'TXXX:Q-JZFKS'                                      '3'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['oldies', 'blues', 'rhythm and blues', 'soul', '60s']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '4'
'TXXX:q-drums'                                      '2'
'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'                                     '3'
'TXXX:replaygain_track_gain'                        '+1.64 dB'
'TXXX:replaygain_track_peak'                        '0.955363'

========================== row from database ==========================
                                              'id'  1387767
                                            'path'  /data/Music/Bulk/00popandrock-swing-funk-soul/Redding, Otis/Otis Redding - For Your Precious Love.mp3
                                         'working'  None
                                         'bitrate'  159
                                    'duration_sec'  177
                                           'genre'  funk or soul-soul
                                        'filesize'  3520384
                                           'mtime'  1620592776
                                   'redo_metaread'  0
                                        'rest_str'   00popandrock swing funk soul Redding, funk soul soul
                                      'tag_artist'  Otis Redding
                                     'tag_release'  Sings Soul Ballads
                                       'tag_title'  For Your Precious Love
                                             'bpm'  122.437
                                    'search_title'  'for':1 'love':4 'precious':3 'your':2
                                   'search_artist'  'otis':1 'redding':2
                                  'search_release'  'ballads':3 'sings':1 'soul':2
                                     'search_rest'  'funk':2 'redding':4,5 'soul':3 'swing':1
                                    'search_combo'  'ballads':9C 'for':1A 'funk':11 'love':4A 'otis':5B 'precious':3A 'redding':6B,13,14 'sings':7C 'soul':8C,12 'swing':10 'your':2A
                                    'tag_tracknum'  7
                                      'num_images'  0
                                             'key'  8A
                                           'quals'  ['Q-HHRNBTT-2', 'q-vocals-3', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-2', 'Q-UNU-1', 'Q-JZFKS-3', 'q-busy-3', 'q-drums-2', 'q-syn-2', 'q-chart-4', 'q-other-3', 'Q-HAP-3', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['oldies', 'blues', 'rhythm and blues', 'soul', '60s']
                                        'tag_date'  1964
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620592775.7185328  (2021-05-09 22:39:35)
                             'size'  3520384