======================== unified (from filesystem) ========================
                                         'bitrate'  '156.247'
                                        'duration'  '210'
                                          'artist'  'Jackson Browne'
                                     'text_people'  ''
                                         'release'  'Running On Empty'
                                           'title'  'Love Needs A Heart'
                                           'quals'  ("['Q-HAP-2', 'Q-LOCALNESS-1', 'Q-JZFKS-1', 'Q-UNU-1', 'Q-OLDST-2', "
 "'Q-HHRNBTT-1', 'Q-PLAY-2', 'q-syn-2', 'q-bass-3', 'q-busy-3', 'q-grit-2', "
 "'q-chart-3', 'q-drums-3', 'q-other-2', 'q-vocals-4', 'q-mixbeat-1', "
 "'Q-PIANO-2']")
                                      'lastfmtags'  "['rock', 'classic rock', 'soft rock', 'folk', 'singer songwriter']"
                                     'discogstags'  "['rock', 'pop rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '7'
                                      'tracktotal'  ''
                                            'date'  '1977'
                                        'comments'  ''
                                           'genre'  'ifs-songwriter'
                                             'bpm'  '144.852'
                                             'key'  '7B'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Running On Empty'
'TBPM' (BPM (beats per minute))                     '144.852'
'TCON' (Content type, a.k.a. Genre)                 'ifs-songwriter'
'TDRC' (Recording time)                             '1977'
'TIT2' (Title/songname/content description)         'Love Needs A Heart'
'TKEY' (Initial key)                                '7B'
'TPE1' (Lead performer(s)/Soloist(s))               'Jackson Browne'
'TRCK' (Track number/Position in set)               '7'
'TXXX:Q-HAP'                                        '2'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-PIANO'                                      '2'
'TXXX:Q-PLAY'                                       '2'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  ['rock', 'pop rock']
'TXXX:lastfmtags'                                   ['rock', 'classic rock', 'soft rock', 'folk', 'singer songwriter']
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '3'
'TXXX:q-drums'                                      '3'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '2'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+0.48 dB'
'TXXX:replaygain_track_peak'                        '0.619543'

========================== row from database ==========================
                                              'id'  1250320
                                            'path'  /data/Music/Bulk/00singer-songwriter-eos/Jackson Browne - 1977 - Running On Empty/07 - Love Needs A Heart.mp3
                                         'working'  None
                                         'bitrate'  156
                                    'duration_sec'  210
                                           'genre'  ifs-songwriter
                                        'filesize'  4113272
                                           'mtime'  1637330792
                                   'redo_metaread'  0
                                        'rest_str'   00singer songwriter eos 1977 07 ifs songwriter
                                      'tag_artist'  Jackson Browne
                                     'tag_release'  Running On Empty
                                       'tag_title'  Love Needs A Heart
                                             'bpm'  144.852
                                    'search_title'  'a':3 'heart':4 'love':1 'needs':2
                                   'search_artist'  'browne':2 'jackson':1
                                  'search_release'  'empty':3 'on':2 'running':1
                                     'search_rest'  '00singer':1 '1977':4 'eos':3 'ifs':5 'songwriter':2
                                    'search_combo'  '00singer':10 '1977':13 'a':3A 'browne':6B 'empty':9C 'eos':12 'heart':4A 'ifs':14 'jackson':5B 'love':1A 'needs':2A 'on':8C 'running':7C 'songwriter':11
                                    'tag_tracknum'  7
                                      'num_images'  0
                                             'key'  7B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-1', 'q-mixbeat-1', 'Q-PIANO-2', 'Q-OLDST-2', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-3', 'q-syn-2', 'q-chart-3', 'q-other-2', 'Q-HAP-2', 'Q-PLAY-2', 'q-bass-3', 'q-grit-2']
                                      'lastfmtags'  ['rock', 'classic rock', 'soft rock', 'folk', 'singer songwriter']
                                        'tag_date'  1977
                                     'discogstags'  ['rock', 'pop rock']

============================== file details ==============================
                                           'mtime'  1637330791.684942  (2021-11-19 15:06:31)
                             'size'  4113272