======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '226'
                                          'artist'  'aquaboogie'
                                     'text_people'  ''
                                         'release'  ''
                                           'title'  'little star'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', 'Q-OLDST-3', "
 "'Q-UNU-1', 'q-syn-3', 'q-bass-3', 'q-busy-2', 'q-grit-2', 'q-play-2', "
 "'q-chart-1', 'q-drums-1', 'q-other-3', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-2']")
                                      'lastfmtags'  "['audiomulch', 'idm', 'electronic', '5 of 10 stars', 'ambient']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '2001'
                                        'comments'  ''
                                           'genre'  'electronic-generic or radio-beats'
                                             'bpm'  '99.274'
                                             'key'  '4B'
                                        'acoustid'  ''
rest: ''

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

'TBPM' (BPM (beats per minute))                     '99.274'
'TCON' (Content type, a.k.a. Genre)                 'electronic-generic or radio-beats'
'TDRC' (Recording time)                             '2001'
'TIT2' (Title/songname/content description)         'little star'
'TKEY' (Initial key)                                '4B'
'TPE1' (Lead performer(s)/Soloist(s))               'aquaboogie'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'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'                                   ['audiomulch', 'idm', 'electronic', '5 of 10 stars', 'ambient']
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '2'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '2'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '3'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+0.68 dB'
'TXXX:replaygain_track_peak'                        '0.849160'

========================== row from database ==========================
                                              'id'  143590
                                            'path'  /data/Music/Bulk/00exnnpjpsprgttidm/monotonik/monotonik-archives-vol-1/[mtk048]-aquaboogie-01-little-star.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  226
                                           'genre'  electronic-generic or radio-beats
                                        'filesize'  3625121
                                           'mtime'  1620543627
                                   'redo_metaread'  0
                                        'rest_str'   00exnnpjpsprgttidm monotonik monotonik archives vol 1 [mtk048] 01 electronic generic or radio beats
                                      'tag_artist'  aquaboogie
                                     'tag_release'  None
                                       'tag_title'  little star
                                             'bpm'  99.274
                                    'search_title'  'little':1 'star':2
                                   'search_artist'  'aquaboogie':1
                                  'search_release'  
                                     'search_rest'  '1':4 'archives':2 'beats':11 'electronic':7 'generic':8 'monotonik':1 'mtk048':5,6 'or':9 'radio':10 'vol':3
                                    'search_combo'  '1':7 'aquaboogie':3B 'archives':5 'beats':14 'electronic':10 'generic':11 'little':1A 'monotonik':4 'mtk048':8,9 'or':12 'radio':13 'star':2A 'vol':6
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  4B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-2', 'q-play-2', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-2', 'q-drums-1', 'q-syn-3', 'q-chart-1', 'q-other-3', 'Q-HAP-3', 'q-bass-3', 'q-grit-2']
                                      'lastfmtags'  ['audiomulch', 'idm', 'electronic', '5 of 10 stars', 'ambient']
                                        'tag_date'  2001
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620543627.1295536  (2021-05-09 09:00:27)
                             'size'  3625121