======================== unified (from filesystem) ========================
                                         'bitrate'  '160.0'
                                        'duration'  '267'
                                          'artist'  'Hedningarna'
                                     'text_people'  ''
                                         'release'  'Tr '
                                           'title'  "T ss'on Nainen"
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-UNU-2', 'Q-HHRNBTT-1', 'Q-OLDST-3', "
 "'Q-LOCALNESS-3', 'q-syn-2', 'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-3', "
 "'q-chart-2', 'q-drums-3', 'q-other-3', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['swedish', 'folk rock', 'scandinavian folk', 'folk', 'nordic']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '01'
                                      'tracktotal'  ''
                                            'date'  ''
                                        'comments'  ''
                                           'genre'  'loc-eur-northern-sweden'
                                             'bpm'  '85.742'
                                             'key'  '8A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Tr '
'TBPM' (BPM (beats per minute))                     '85.742'
'TCON' (Content type, a.k.a. Genre)                 'loc-eur-northern-sweden'
'TIT2' (Title/songname/content description)         "T ss'on Nainen"
'TKEY' (Initial key)                                '8A'
'TPE1' (Lead performer(s)/Soloist(s))               'Hedningarna'
'TRCK' (Track number/Position in set)               '01'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '3'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '2'
'TXXX:lastfmtags'                                   ['swedish', 'folk rock', 'scandinavian folk', 'folk', 'nordic']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '3'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '-1.30 dB'
'TXXX:replaygain_track_peak'                        '0.556922'

========================== row from database ==========================
                                              'id'  1517357
                                            'path'  /data/Music/Bulk/00localcharacter/00mid-north-europe/00scandinavia/Hedningarna/MBZ;#Hedningarna;#Tr_;#01;#T_ss_on Nainen.mp3
                                         'working'  None
                                         'bitrate'  160
                                    'duration_sec'  267
                                           'genre'  loc-eur-northern-sweden
                                        'filesize'  5348086
                                           'mtime'  1621629424
                                   'redo_metaread'  0
                                        'rest_str'   00localcharacter 00mid north europe 00scandinavia MBZ;#Hedningarna;#Tr_;#01;#T_ss_on loc eur northern sweden
                                      'tag_artist'  Hedningarna
                                     'tag_release'  Tr 
                                       'tag_title'  T ss'on Nainen
                                             'bpm'  85.742
                                    'search_title'  'nainen':5 'on':3 'ss':2 'sson':4 't':1
                                   'search_artist'  'hedningarna':1
                                  'search_release'  'tr':1
                                     'search_rest'  '00mid':1 '00scandinavia':4 '01':8,15 'eur':20 'europe':3 'hedningarna':6,13 'loc':19 'mbz':5,12 'north':2 'northern':21 'on':11,18 'ss':10,17 'sweden':22 't':9,16 'tr':7,14
                                    'search_combo'  '00mid':8 '00scandinavia':11 '01':15,22 'eur':27 'europe':10 'hedningarna':6B,13,20 'loc':26 'mbz':12,19 'nainen':5A 'north':9 'northern':28 'on':3A,18,25 'ss':2A,17,24 'sson':4A 'sweden':29 't':1A,16,23 'tr':7C,14,21
                                    'tag_tracknum'  1
                                      'num_images'  0
                                             'key'  8A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-3', 'q-piano-1', 'q-mixbeat-1', 'q-play-3', 'Q-OLDST-3', 'Q-UNU-2', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-3', 'q-syn-2', 'q-chart-2', 'q-other-3', 'Q-HAP-3', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['swedish', 'folk rock', 'scandinavian folk', 'folk', 'nordic']
                                        'tag_date'  
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1621629424.4566345  (2021-05-21 22:37:04)
                             'size'  5348086