======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '556'
                                          'artist'  'John'
                                     'text_people'  ''
                                         'release'  'B Up All Night '
                                           'title'  'a-up-all-night remix'
                                           'quals'  ("['Q-HAP-3', 'Q-UNU-1', 'Q-HHRNBTT-1', 'Q-LOCALNESS-1', 'Q-JZFKS-1', "
 "'Q-OLDST-3', 'q-syn-3', 'q-bass-4', 'q-busy-3', 'q-grit-3', 'q-play-2', "
 "'q-chart-2', 'q-drums-4', 'q-other-2', 'q-piano-1', 'q-vocals-1', "
 "'q-mixbeat-4']")
                                      'lastfmtags'  "['japanese', 'indie', 'techno', 'alternative', 'kali']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  ''
                                        'comments'  ''
                                           'genre'  'electronic-th-breakbeat or dnb or jungle'
                                             'bpm'  '115.854'
                                             'key'  '9A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'B Up All Night '
'TBPM' (BPM (beats per minute))                     '115.854'
'TCON' (Content type, a.k.a. Genre)                 'electronic-th-breakbeat or dnb or jungle'
'TIT2' (Title/songname/content description)         'a-up-all-night remix'
'TKEY' (Initial key)                                '9A'
'TPE1' (Lead performer(s)/Soloist(s))               'John'
'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:lastfmtags'                                   ['japanese', 'indie', 'techno', 'alternative', 'kali']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '3'
'TXXX:q-mixbeat'                                    '4'
'TXXX:q-other'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '3'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '-1.55 dB'
'TXXX:replaygain_track_peak'                        '0.440842'

========================== row from database ==========================
                                              'id'  1491831
                                            'path'  /data/Music/Bulk/00localcharacter/00mid-north-europe/00dutch/John__cifsee40.mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  556
                                           'genre'  electronic-th-breakbeat or dnb or jungle
                                        'filesize'  13356674
                                           'mtime'  1621696362
                                   'redo_metaread'  0
                                        'rest_str'   00localcharacter 00mid north europe 00dutch John__cifsee40 electronic th breakbeat or dnb or jungle
                                      'tag_artist'  John
                                     'tag_release'  B Up All Night 
                                       'tag_title'  a-up-all-night remix
                                             'bpm'  115.854
                                    'search_title'  'a':1 'all':3 'aupallnight':5 'night':4 'remix':6 'up':2
                                   'search_artist'  'john':1
                                  'search_release'  'all':3 'b':1 'night':4 'up':2
                                     'search_rest'  '00dutch':4 '00mid':1 'breakbeat':9 'cifsee40':6 'dnb':11 'electronic':7 'europe':3 'john':5 'jungle':12 'north':2 'or':10 'th':8
                                    'search_combo'  '00dutch':15 '00mid':12 'a':1A 'all':3A,10C 'aupallnight':5A 'b':8C 'breakbeat':20 'cifsee40':17 'dnb':22 'electronic':18 'europe':14 'john':7B,16 'jungle':23 'night':4A,11C 'north':13 'or':21 'remix':6A 'th':19 'up':2A,9C
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  9A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-4', 'q-play-2', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-4', 'q-syn-3', 'q-chart-2', 'q-other-2', 'Q-HAP-3', 'q-bass-4', 'q-grit-3']
                                      'lastfmtags'  ['japanese', 'indie', 'techno', 'alternative', 'kali']
                                        'tag_date'  
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1621696362.4741404  (2021-05-22 17:12:42)
                             'size'  13356674