======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '302'
                                          'artist'  'Rilo Kiley'
                                     'text_people'  ''
                                         'release'  ''
                                           'title'  'Secret Song'
                                           'quals'  ("['Q-HAP-3', 'Q-UNU-1', 'Q-LOCALNESS-1', 'Q-OLDST-3', 'Q-HHRNBTT-1', "
 "'Q-JZFKS-1', 'q-syn-2', 'q-bass-1', 'q-busy-3', 'q-grit-2', 'q-play-3', "
 "'q-chart-3', 'q-drums-2', 'q-other-2', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['indie', 'female vocalists', 'favorites', 'indie rock']"
                                     'discogstags'  "['rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '9'
                                      'tracktotal'  ''
                                            'date'  ''
                                        'comments'  ''
                                           'genre'  'ifs-songwriter;ifs-songwriter-indie-pop'
                                             'bpm'  '134.110'
                                             'key'  '10A'
                                        'acoustid'  ''
rest: ''

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

'TBPM' (BPM (beats per minute))                     '134.110'
'TCON' (Content type, a.k.a. Genre)                 ['ifs-songwriter', 'ifs-songwriter-indie-pop']
'TIT2' (Title/songname/content description)         'Secret Song'
'TKEY' (Initial key)                                '10A'
'TPE1' (Lead performer(s)/Soloist(s))               'Rilo Kiley'
'TRCK' (Track number/Position in set)               '9'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  'rock'
'TXXX:lastfmtags'                                   ['indie', 'female vocalists', 'favorites', 'indie rock']
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '3'
'TXXX:q-drums'                                      '2'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '-0.28 dB'
'TXXX:replaygain_track_peak'                        '0.720619'

========================== row from database ==========================
                                              'id'  171689
                                            'path'  /data/Music/Bulk/00singer-songwriter-eos/Rilo Kiley/rilo kiley - Secret Song.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  302
                                           'genre'  ifs-songwriter;ifs-songwriter-indie-pop
                                        'filesize'  4841038
                                           'mtime'  1628356156
                                   'redo_metaread'  0
                                        'rest_str'   00singer songwriter eos rilo kiley ifs songwriter;ifs songwriter indie pop
                                      'tag_artist'  Rilo Kiley
                                     'tag_release'  None
                                       'tag_title'  Secret Song
                                             'bpm'  134.11
                                    'search_title'  'secret':1 'song':2
                                   'search_artist'  'kiley':2 'rilo':1
                                  'search_release'  
                                     'search_rest'  '00singer':1 'eos':3 'ifs':6,8,10 'indie':11 'kiley':5 'pop':12 'rilo':4 'songwriter':2,7,9
                                    'search_combo'  '00singer':5 'eos':7 'ifs':10,12,14 'indie':15 'kiley':4B,9 'pop':16 'rilo':3B,8 'secret':1A 'song':2A 'songwriter':6,11,13
                                    'tag_tracknum'  9
                                      'num_images'  0
                                             'key'  10A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-3', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-2', 'q-syn-2', 'q-chart-3', 'q-other-2', 'Q-HAP-3', 'q-bass-1', 'q-grit-2']
                                      'lastfmtags'  ['indie', 'female vocalists', 'favorites', 'indie rock']
                                        'tag_date'  
                                     'discogstags'  ['rock']

============================== file details ==============================
                                           'mtime'  1628356155.85865  (2021-08-07 19:09:15)
                             'size'  4841038