======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '152'
                                          'artist'  'Glider'
                                     'text_people'  ''
                                         'release'  ''
                                           'title'  'After the Flight'
                                           'quals'  ("['Q-HAP-3', 'Q-UNU-1', 'Q-JZFKS-1', 'Q-HHRNBTT-1', 'Q-OLDST-3', "
 "'Q-LOCALNESS-1', 'q-syn-3', 'q-bass-4', 'q-busy-2', 'q-grit-2', 'q-play-3', "
 "'q-chart-2', 'q-drums-2', 'q-other-2', 'q-piano-1', 'q-vocals-1', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['post-rock', 'shoegaze', 'space rock', 'indie', 'instrumental']"
                                     'discogstags'  "['electronic']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  ''
                                        'comments'  ''
                                           'genre'  'electronic-ambient'
                                             'bpm'  '143.3'
                                             'key'  '3B'
                                        'acoustid'  ''
rest: ''

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

'TBPM' (BPM (beats per minute))                     '143.3'
'TCON' (Content type, a.k.a. Genre)                 'electronic-ambient'
'TIT2' (Title/songname/content description)         'After the Flight'
'TKEY' (Initial key)                                '3B'
'TPE1' (Lead performer(s)/Soloist(s))               'Glider'
'TSSE' (Software/Hardware and settings used for encoding)  'Audiograbber 1.80, Fraunhofer acm, 128 kBit/s, 44,100 Hz, Stereo, HQ = off'
'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'                                  'electronic'
'TXXX:lastfmtags'                                   ['post-rock', 'shoegaze', 'space rock', 'indie', 'instrumental']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '2'
'TXXX:q-chart'                                      '2'
'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'                                        '3'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '-2.62 dB'
'TXXX:replaygain_track_peak'                        '0.831495'

========================== row from database ==========================
                                              'id'  986476
                                            'path'  /data/Music/Bulk/00exnnpjpsprgttidm/Epitonic ambient/Glider-After the Flight.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  152
                                           'genre'  electronic-ambient
                                        'filesize'  2434665
                                           'mtime'  1636910349
                                   'redo_metaread'  0
                                        'rest_str'   00exnnpjpsprgttidm Epitonic ambient electronic ambient
                                      'tag_artist'  Glider
                                     'tag_release'  None
                                       'tag_title'  After the Flight
                                             'bpm'  143.3
                                    'search_title'  'after':1 'flight':3 'the':2
                                   'search_artist'  'glider':1
                                  'search_release'  
                                     'search_rest'  'ambient':2 'electronic':3 'epitonic':1
                                    'search_combo'  'after':1A 'ambient':6 'electronic':7 'epitonic':5 'flight':3A 'glider':4B 'the':2A
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  3B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-3', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-2', 'q-drums-2', 'q-syn-3', 'q-chart-2', 'q-other-2', 'Q-HAP-3', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['post-rock', 'shoegaze', 'space rock', 'indie', 'instrumental']
                                        'tag_date'  
                                     'discogstags'  ['electronic']

============================== file details ==============================
                                           'mtime'  1636910348.9678183  (2021-11-14 18:19:08)
                             'size'  2434665