======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '261'
                                          'artist'  'Stevie Wonder'
                                     'text_people'  ''
                                         'release'  'Hits of the 80s'
                                           'title'  'I Just Called To Say I Love Yo'
                                           'quals'  ("['Q-HAP-3', 'Q-OLDST-3', 'Q-LOCALNESS-1', 'Q-HHRNBTT-2', 'Q-JZFKS-3', "
 "'Q-UNU-1', 'q-syn-2', 'q-bass-3', 'q-busy-3', 'q-grit-2', 'q-play-3', "
 "'q-chart-4', 'q-drums-3', 'q-other-2', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-2']")
                                      'lastfmtags'  "['pop', 'motown', 'soul', 'funk', 'rnb']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '4'
                                      'tracktotal'  ''
                                            'date'  '1984'
                                        'comments'  ''
                                           'genre'  'electronic-generic or radio-unsorted'
                                             'bpm'  '113.517'
                                             'key'  '2A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Hits of the 80s'
'TBPM' (BPM (beats per minute))                     '113.517'
'TCON' (Content type, a.k.a. Genre)                 'electronic-generic or radio-unsorted'
'TDRC' (Recording time)                             '1984'
'TIT2' (Title/songname/content description)         'I Just Called To Say I Love Yo'
'TKEY' (Initial key)                                '2A'
'TPE1' (Lead performer(s)/Soloist(s))               'Stevie Wonder'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TRCK' (Track number/Position in set)               '4'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '2'
'TXXX:Q-JZFKS'                                      '3'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['pop', 'motown', 'soul', 'funk', 'rnb']
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '4'
'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'                        '+0.07 dB'
'TXXX:replaygain_track_peak'                        '0.593988'

========================== row from database ==========================
                                              'id'  1528165
                                            'path'  /data/Music/Bulk/00poprockelectronic/Hits Of The 80_s/Stevie Wonder - I Just Called To Say I Love You.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  261
                                           'genre'  electronic-generic or radio-unsorted
                                        'filesize'  4194497
                                           'mtime'  1628353619
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic Of The 80_s You electronic generic or radio unsorted
                                      'tag_artist'  Stevie Wonder
                                     'tag_release'  Hits of the 80s
                                       'tag_title'  I Just Called To Say I Love Yo
                                             'bpm'  113.517
                                    'search_title'  'called':3 'i':1 'just':2 'love':6 'say':5 'to':4 'yo':7
                                   'search_artist'  'stevie':1 'wonder':2
                                  'search_release'  '80s':4 'hits':1 'of':2 'the':3
                                     'search_rest'  '00poprockelectronic':1 '80':4 'electronic':7 'generic':8 'of':2 'or':9 'radio':10 's':5 'the':3 'unsorted':11 'you':6
                                    'search_combo'  '00poprockelectronic':14 '80':17 '80s':13C 'called':3A 'electronic':20 'generic':21 'hits':10C 'i':1A 'just':2A 'love':6A 'of':11C,15 'or':22 'radio':23 's':18 'say':5A 'stevie':8B 'the':12C,16 'to':4A 'unsorted':24 'wonder':9B 'yo':7A 'you':19
                                    'tag_tracknum'  4
                                      'num_images'  0
                                             'key'  2A
                                           'quals'  ['Q-HHRNBTT-2', 'q-vocals-4', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-2', 'q-play-3', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-3', 'q-busy-3', 'q-drums-3', 'q-syn-2', 'q-chart-4', 'q-other-2', 'Q-HAP-3', 'q-bass-3', 'q-grit-2']
                                      'lastfmtags'  ['pop', 'motown', 'soul', 'funk', 'rnb']
                                        'tag_date'  1984
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1628353618.5242412  (2021-08-07 18:26:58)
                             'size'  4194497