======================== unified (from filesystem) ========================
                                         'bitrate'  '320.0'
                                        'duration'  '123'
                                          'artist'  'Deben Bhattacharya'
                                     'text_people'  ''
                                         'release'  '[Argo ZFB 49] Music from Hungary - The Living Tradition - P.1971'
                                           'title'  "A1 Csardas \x14 slow and fast 2'00"
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-UNU-3', 'Q-HHRNBTT-1', 'Q-OLDST-1', "
 "'Q-LOCALNESS-4', 'q-syn-1', 'q-bass-1', 'q-busy-3', 'q-grit-2', 'q-play-2', "
 "'q-chart-1', 'q-drums-1', 'q-other-4', 'q-piano-1', 'q-vocals-1', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['traditional', 'ethnic', 'world music', 'folk', 'ethnomusicologist']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '1'
                                      'tracktotal'  ''
                                            'date'  '1971'
                                        'comments'  ''
                                           'genre'  'loc-eur-hungary'
                                             'bpm'  '108.879'
                                             'key'  '7A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     '[Argo ZFB 49] Music from Hungary - The Living Tradition - P.1971'
'TBPM' (BPM (beats per minute))                     '108.879'
'TCON' (Content type, a.k.a. Genre)                 'loc-eur-hungary'
'TDRC' (Recording time)                             '1971'
'TIT2' (Title/songname/content description)         "A1 Csardas \x14 slow and fast 2'00"
'TKEY' (Initial key)                                '7A'
'TPE1' (Lead performer(s)/Soloist(s))               'Deben Bhattacharya'
'TRCK' (Track number/Position in set)               '1'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '4'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '3'
'TXXX:lastfmtags'                                   ['traditional', 'ethnic', 'world music', 'folk', 'ethnomusicologist']
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '4'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '+0.71 dB'
'TXXX:replaygain_track_peak'                        '0.543102'

========================== row from database ==========================
                                              'id'  1509302
                                            'path'  /data/Music/Bulk/00localcharacter/00south-europe-middle-east/Deben Bhattacharya - Music from Hungary (Argo, 1971)/A1 Csardas GÇö slow and fast 2_00-sf.mp3
                                         'working'  None
                                         'bitrate'  320
                                    'duration_sec'  123
                                           'genre'  loc-eur-hungary
                                        'filesize'  4962522
                                           'mtime'  1620532659
                                   'redo_metaread'  0
                                        'rest_str'   00localcharacter 00south europe middle east (Argo, 1971) GÇö 2_00 sf loc eur hungary
                                      'tag_artist'  Deben Bhattacharya
                                     'tag_release'  [Argo ZFB 49] Music from Hungary - The Living Tradition - P.1971
                                       'tag_title'  A1 Csardas  slow and fast 2'00
                                             'bpm'  108.879
                                    'search_title'  '00':7 '2':6 '200':8 'a1':1 'and':4 'csardas':2 'fast':5 'slow':3
                                   'search_artist'  'bhattacharya':2 'deben':1
                                  'search_release'  '1971':13 '49':4,5 'argo':1,2 'from':7 'hungary':8 'living':10 'music':6 'p':12 'p1971':14 'the':9 'tradition':11 'zfb':3
                                     'search_rest'  '00':12 '00south':1 '1971':7,8 '2':11 'argo':5,6 'east':4 'eur':15 'europe':2 'gco':9,10 'hungary':16 'loc':14 'middle':3 'sf':13
                                    'search_combo'  '00':7A,36 '00south':25 '1971':23C,31,32 '2':6A,35 '200':8A '49':14C,15C 'a1':1A 'and':4A 'argo':11C,12C,29,30 'bhattacharya':10B 'csardas':2A 'deben':9B 'east':28 'eur':39 'europe':26 'fast':5A 'from':17C 'gco':33,34 'hungary':18C,40 'living':20C 'loc':38 'middle':27 'music':16C 'p':22C 'p1971':24C 'sf':37 'slow':3A 'the':19C 'tradition':21C 'zfb':13C
                                    'tag_tracknum'  1
                                      'num_images'  0
                                             'key'  7A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-4', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-1', 'Q-UNU-3', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-1', 'q-syn-1', 'q-chart-1', 'q-other-4', 'Q-HAP-3', 'q-bass-1', 'q-grit-2']
                                      'lastfmtags'  ['traditional', 'ethnic', 'world music', 'folk', 'ethnomusicologist']
                                        'tag_date'  1971
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620532659.4915307  (2021-05-09 05:57:39)
                             'size'  4962522