======================== unified (from filesystem) ========================
                                         'bitrate'  '160.0'
                                        'duration'  '230'
                                          'artist'  'Zakir Hussain & Rhythm exp.'
                                     'text_people'  ''
                                         'release'  'Zakir Hussain & Rhythm Exp'
                                           'title'  'Track 1'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-UNU-3', 'Q-HHRNBTT-1', 'Q-OLDST-1', "
 "'Q-LOCALNESS-4', 'q-syn-2', 'q-bass-1', 'q-busy-3', 'q-grit-2', 'q-play-2', "
 "'q-chart-1', 'q-drums-2', 'q-other-4', 'q-piano-1', 'q-vocals-1', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['tabla', 'indian classical', 'world', 'indian', 'percussion']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '10'
                                      'tracktotal'  ''
                                            'date'  '2000'
                                        'comments'  ''
                                           'genre'  'loc-m'
                                             'bpm'  '135.004'
                                             'key'  '9B'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Zakir Hussain & Rhythm Exp'
'TBPM' (BPM (beats per minute))                     '135.004'
'TCON' (Content type, a.k.a. Genre)                 'loc-m'
'TDRC' (Recording time)                             '2000'
'TIT2' (Title/songname/content description)         'Track 1'
'TKEY' (Initial key)                                '9B'
'TPE1' (Lead performer(s)/Soloist(s))               'Zakir Hussain & Rhythm exp.'
'TRCK' (Track number/Position in set)               '10'
'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'                                   ['tabla', 'indian classical', 'world', 'indian', 'percussion']
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '2'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '4'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '+0.91 dB'
'TXXX:replaygain_track_peak'                        '0.762163'

========================== row from database ==========================
                                              'id'  929993
                                            'path'  /data/Music/Bulk/00localcharacter/00south-europe-middle-east/Tabla Beat Science/Zakir Hussain/Zakir Hussain & Rhythm Experience/01 - Balinese Fantasy.mp3
                                         'working'  None
                                         'bitrate'  160
                                    'duration_sec'  230
                                           'genre'  loc-m
                                        'filesize'  4618887
                                           'mtime'  1620526581
                                   'redo_metaread'  0
                                        'rest_str'   00localcharacter 00south europe middle east Tabla Beat Science Experience 01 Balinese Fantasy loc
                                      'tag_artist'  Zakir Hussain & Rhythm exp.
                                     'tag_release'  Zakir Hussain & Rhythm Exp
                                       'tag_title'  Track 1
                                             'bpm'  135.004
                                    'search_title'  '1':2 'track':1
                                   'search_artist'  'exp':4,5 'hussain':2 'rhythm':3 'zakir':1
                                  'search_release'  'exp':4 'hussain':2 'rhythm':3 'zakir':1
                                     'search_rest'  '00south':1 'balinese':9 'beat':6 'east':4 'europe':2 'experience':8 'fantasy':10 'loc':11 'middle':3 'science':7 'tabla':5
                                    'search_combo'  '00south':12 '1':2A 'balinese':20 'beat':17 'east':15 'europe':13 'exp':6B,7B,11C 'experience':19 'fantasy':21 'hussain':4B,9C 'loc':22 'middle':14 'rhythm':5B,10C 'science':18 'tabla':16 'track':1A 'zakir':3B,8C
                                    'tag_tracknum'  10
                                      'num_images'  0
                                             'key'  9B
                                           '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-2', 'q-syn-2', 'q-chart-1', 'q-other-4', 'Q-HAP-3', 'q-bass-1', 'q-grit-2']
                                      'lastfmtags'  ['tabla', 'indian classical', 'world', 'indian', 'percussion']
                                        'tag_date'  2000
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620526581.2912703  (2021-05-09 04:16:21)
                             'size'  4618887