======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '294'
                                          'artist'  'Janet Jackson'
                                     'text_people'  ''
                                         'release'  'Velvet Rope'
                                           'title'  'Free Xone'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-LOCALNESS-1', 'Q-HHRNBTT-2', 'Q-UNU-1', "
 "'Q-OLDST-2', 'q-syn-2', 'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-2', "
 "'q-chart-2', 'q-drums-4', 'q-other-2', 'q-piano-1', 'q-vocals-2', "
 "'q-mixbeat-3']")
                                      'lastfmtags'  "['dance', 'rnb', 'female vocalists', 'soul', 'pop']"
                                     'discogstags'  ("['rnb/swing', 'downtempo', 'soul', 'electronic', 'hip hop', 'funk / soul', "
 "'pop']")
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '9'
                                      'tracktotal'  ''
                                            'date'  '1997'
                                        'comments'  ''
                                           'genre'  'funk or soul'
                                             'bpm'  '118.845'
                                             'key'  '3A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Velvet Rope'
'TBPM' (BPM (beats per minute))                     '118.845'
'TCON' (Content type, a.k.a. Genre)                 'funk or soul'
'TDRC' (Recording time)                             '1997'
'TIT2' (Title/songname/content description)         'Free Xone'
'TKEY' (Initial key)                                '3A'
'TPE1' (Lead performer(s)/Soloist(s))               'Janet Jackson'
'TRCK' (Track number/Position in set)               '9'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '2'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  ['rnb/swing',
 'downtempo',
 'soul',
 'electronic',
 'hip hop',
 'funk / soul',
 'pop']
'TXXX:lastfmtags'                                   ['dance', 'rnb', 'female vocalists', 'soul', 'pop']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '3'
'TXXX:q-other'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '2'
'TXXX:replaygain_track_gain'                        '-0.62 dB'
'TXXX:replaygain_track_peak'                        '0.562971'

========================== row from database ==========================
                                              'id'  1285580
                                            'path'  /data/Music/Bulk/00poprockelectronic/Janet Jackson/Janet Jackson__cifsd7ac.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  294
                                           'genre'  funk or soul
                                        'filesize'  4711920
                                           'mtime'  1621696303
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic Jackson__cifsd7ac funk or soul
                                      'tag_artist'  Janet Jackson
                                     'tag_release'  Velvet Rope
                                       'tag_title'  Free Xone
                                             'bpm'  118.845
                                    'search_title'  'free':1 'xone':2
                                   'search_artist'  'jackson':2 'janet':1
                                  'search_release'  'rope':2 'velvet':1
                                     'search_rest'  '00poprockelectronic':1 'cifsd7ac':3 'funk':4 'jackson':2 'or':5 'soul':6
                                    'search_combo'  '00poprockelectronic':7 'cifsd7ac':9 'free':1A 'funk':10 'jackson':4B,8 'janet':3B 'or':11 'rope':6C 'soul':12 'velvet':5C 'xone':2A
                                    'tag_tracknum'  9
                                      'num_images'  0
                                             'key'  3A
                                           'quals'  ['Q-HHRNBTT-2', 'q-vocals-2', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-3', 'q-play-2', 'Q-OLDST-2', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-4', 'q-syn-2', 'q-chart-2', 'q-other-2', 'Q-HAP-3', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['dance', 'rnb', 'female vocalists', 'soul', 'pop']
                                        'tag_date'  1997
                                     'discogstags'  ['rnb/swing', 'downtempo', 'soul', 'electronic', 'hip hop', 'funk / soul', 'pop']

============================== file details ==============================
                                           'mtime'  1621696302.5399568  (2021-05-22 17:11:42)
                             'size'  4711920