======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '448'
                                          'artist'  'Lakeside'
                                     'text_people'  ''
                                         'release'  'Lakeside Express'
                                           'title'  "If I Didn't Have You"
                                           'quals'  ("['Q-HAP-3', 'Q-LOCALNESS-1', 'Q-HHRNBTT-2', 'Q-UNU-1', 'Q-JZFKS-4', "
 "'Q-OLDST-2', 'q-syn-2', 'q-bass-3', 'q-busy-3', 'q-grit-2', 'q-play-3', "
 "'q-chart-2', 'q-drums-3', 'q-other-2', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-2']")
                                      'lastfmtags'  "['rnb', '70s', 'soul', 'funk', 'disco']"
                                     'discogstags'  "['soul', 'funk', 'funk / soul']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '6'
                                      'tracktotal'  ''
                                            'date'  '1977'
                                        'comments'  ''
                                           'genre'  'funk or soul-funk'
                                             'bpm'  '140.3'
                                             'key'  '4A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Lakeside Express'
'TBPM' (BPM (beats per minute))                     '140.3'
'TCON' (Content type, a.k.a. Genre)                 'funk or soul-funk'
'TDRC' (Recording time)                             '1977'
'TIT2' (Title/songname/content description)         "If I Didn't Have You"
'TKEY' (Initial key)                                '4A'
'TPE1' (Lead performer(s)/Soloist(s))               'Lakeside'
'TRCK' (Track number/Position in set)               '6'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '2'
'TXXX:Q-JZFKS'                                      '4'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  ['soul', 'funk', 'funk / soul']
'TXXX:lastfmtags'                                   ['rnb', '70s', 'soul', 'funk', 'disco']
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '3'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '2'
'TXXX:q-other'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+2.26 dB'
'TXXX:replaygain_track_peak'                        '0.384144'

========================== row from database ==========================
                                              'id'  1515149
                                            'path'  /data/Music/Bulk/00popandrock-swing-funk-soul/lakeside - 1977 lakeside/b2 - lakeside - if i didn_t have you.mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  448
                                           'genre'  funk or soul-funk
                                        'filesize'  10766136
                                           'mtime'  1620665733
                                   'redo_metaread'  0
                                        'rest_str'   00popandrock swing funk soul lakeside 1977 lakeside b2 lakeside if didn_t have you funk or soul funk
                                      'tag_artist'  Lakeside
                                     'tag_release'  Lakeside Express
                                       'tag_title'  If I Didn't Have You
                                             'bpm'  140.3
                                    'search_title'  'didn':3 'didnt':5 'have':6 'i':2 'if':1 't':4 'you':7
                                   'search_artist'  'lakeside':1
                                  'search_release'  'express':2 'lakeside':1
                                     'search_rest'  '1977':5 'b2':6 'didn':8 'funk':2 'have':10 'if':7 'lakeside':4 'or':12 'soul':3 'swing':1 't':9 'you':11
                                    'search_combo'  '1977':15 'b2':16 'didn':3A,18 'didnt':5A 'express':10C 'funk':12 'have':6A,20 'i':2A 'if':1A,17 'lakeside':8B,9C,14 'or':22 'soul':13 'swing':11 't':4A,19 'you':7A,21
                                    'tag_tracknum'  6
                                      'num_images'  0
                                             'key'  4A
                                           'quals'  ['Q-HHRNBTT-2', 'q-vocals-4', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-2', 'q-play-3', 'Q-OLDST-2', 'Q-UNU-1', 'Q-JZFKS-4', 'q-busy-3', 'q-drums-3', 'q-syn-2', 'q-chart-2', 'q-other-2', 'Q-HAP-3', 'q-bass-3', 'q-grit-2']
                                      'lastfmtags'  ['rnb', '70s', 'soul', 'funk', 'disco']
                                        'tag_date'  1977
                                     'discogstags'  ['soul', 'funk', 'funk / soul']

============================== file details ==============================
                                           'mtime'  1620665733.439843  (2021-05-10 18:55:33)
                             'size'  10766136