======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '313'
                                          'artist'  'Fairport Convention'
                                     'text_people'  ''
                                         'release'  'Unhalfbricking'
                                           'title'  'Who Knows Where the Time Goes'
                                           'quals'  ("['Q-HAP-3', 'Q-UNU-1', 'Q-LOCALNESS-1', 'Q-OLDST-3', 'Q-JZFKS-1', "
 "'Q-HHRNBTT-1', 'q-syn-2', 'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-2', "
 "'q-chart-2', 'q-drums-1', 'q-other-2', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['folk rock', 'british folk', 'british', 'folk']"
                                     'discogstags'  "['rock', 'folk rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1969'
                                        'comments'  ''
                                           'genre'  'ifs-folk-rock'
                                             'bpm'  '144.955'
                                             'key'  '12B'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Unhalfbricking'
'TBPM' (BPM (beats per minute))                     '144.955'
'TCON' (Content type, a.k.a. Genre)                 'ifs-folk-rock'
'TDRC' (Recording time)                             '1969'
'TIT2' (Title/songname/content description)         'Who Knows Where the Time Goes'
'TKEY' (Initial key)                                '12B'
'TPE1' (Lead performer(s)/Soloist(s))               'Fairport Convention'
'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', 'folk rock']
'TXXX:lastfmtags'                                   ['folk rock', 'british folk', 'british', 'folk']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+2.14 dB'
'TXXX:replaygain_track_peak'                        '0.636183'

========================== row from database ==========================
                                              'id'  1264659
                                            'path'  /data/Music/Bulk/00singer-songwriter-eos/Fairport Convention/Unhalfbricking/Fairport Convention - 06 Who Knows Where the Time Goes.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  313
                                           'genre'  ifs-folk-rock
                                        'filesize'  5024345
                                           'mtime'  1622758064
                                   'redo_metaread'  0
                                        'rest_str'   00singer songwriter eos 06 ifs folk rock
                                      'tag_artist'  Fairport Convention
                                     'tag_release'  Unhalfbricking
                                       'tag_title'  Who Knows Where the Time Goes
                                             'bpm'  144.955
                                    'search_title'  'goes':6 'knows':2 'the':4 'time':5 'where':3 'who':1
                                   'search_artist'  'convention':2 'fairport':1
                                  'search_release'  'unhalfbricking':1
                                     'search_rest'  '00singer':1 'eos':3 'folk':5 'ifs':4 'rock':6 'songwriter':2
                                    'search_combo'  '00singer':10 'convention':8B 'eos':12 'fairport':7B 'folk':14 'goes':6A 'ifs':13 'knows':2A 'rock':15 'songwriter':11 'the':4A 'time':5A 'unhalfbricking':9C 'where':3A 'who':1A
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  12B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-1', 'q-syn-2', 'q-chart-2', 'q-other-2', 'Q-HAP-3', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['folk rock', 'british folk', 'british', 'folk']
                                        'tag_date'  1969
                                     'discogstags'  ['rock', 'folk rock']

============================== file details ==============================
                                           'mtime'  1622758064.4683287  (2021-06-04 00:07:44)
                             'size'  5024345