======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '525'
                                          'artist'  "Steel 'n' Skin"
                                     'text_people'  ''
                                         'release'  'You'
                                           'title'  'Acid Rain'
                                           'quals'  ("['Q-HAP-3', 'Q-UNU-1', 'Q-JZFKS-2', 'Q-LOCALNESS-2', 'Q-OLDST-2', "
 "'Q-HHRNBTT-2', 'q-syn-2', 'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-2', "
 "'q-chart-1', 'q-drums-4', 'q-other-2', 'q-piano-1', 'q-vocals-2', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['reggae', 'dub', 'disco', 'jazz-funk', 'boogie']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  ''
                                        'comments'  ''
                                           'genre'  'set-pl-you'
                                             'bpm'  '102.644'
                                             'key'  '8A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'You'
'TBPM' (BPM (beats per minute))                     '102.644'
'TCON' (Content type, a.k.a. Genre)                 'set-pl-you'
'TIT2' (Title/songname/content description)         'Acid Rain'
'TKEY' (Initial key)                                '8A'
'TPE1' (Lead performer(s)/Soloist(s))               "Steel 'n' Skin"
'TSSE' (Software/Hardware and settings used for encoding)  'Lavf54.20.4'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '2'
'TXXX:Q-JZFKS'                                      '2'
'TXXX:Q-LOCALNESS'                                  '2'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-UNU'                                        '1'
'TXXX:compatible_brands'                            'iso6mp41'
'TXXX:lastfmtags'                                   ['reggae', 'dub', 'disco', 'jazz-funk', 'boogie']
'TXXX:major_brand'                                  'dash'
'TXXX:minor_version'                                '0'
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '4'
'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'                                     '2'
'TXXX:replaygain_track_gain'                        '+0.74 dB'
'TXXX:replaygain_track_peak'                        '0.596668'

========================== row from database ==========================
                                              'id'  1520379
                                            'path'  /data/Music/Bulk/0playlists/0novelty themes/You/Steel _n_ Skin - Acid Rain.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  525
                                           'genre'  set-pl-you
                                        'filesize'  8412381
                                           'mtime'  1621696531
                                   'redo_metaread'  0
                                        'rest_str'   0playlists 0novelty themes _n_ set pl you
                                      'tag_artist'  Steel 'n' Skin
                                     'tag_release'  You
                                       'tag_title'  Acid Rain
                                             'bpm'  102.644
                                    'search_title'  'acid':1 'rain':2
                                   'search_artist'  'n':2,3 'skin':4 'steel':1
                                  'search_release'  'you':1
                                     'search_rest'  '0novelty':2 '0playlists':1 'n':4 'pl':6 'set':5 'themes':3 'you':7
                                    'search_combo'  '0novelty':9 '0playlists':8 'acid':1A 'n':4B,5B,11 'pl':13 'rain':2A 'set':12 'skin':6B 'steel':3B 'themes':10 'you':7C,14
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  8A
                                           'quals'  ['Q-HHRNBTT-2', 'q-vocals-2', 'Q-LOCALNESS-2', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-2', 'Q-UNU-1', 'Q-JZFKS-2', 'q-busy-3', 'q-drums-4', 'q-syn-2', 'q-chart-1', 'q-other-2', 'Q-HAP-3', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['reggae', 'dub', 'disco', 'jazz-funk', 'boogie']
                                        'tag_date'  
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1621696530.651081  (2021-05-22 17:15:30)
                             'size'  8412381