======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '329'
                                          'artist'  'binary'
                                     'text_people'  ''
                                         'release'  ''
                                           'title'  '9899'
                                           'quals'  ("['Q-HAP-3', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', 'Q-JZFKS-1', 'Q-UNU-1', "
 "'Q-OLDST-3', 'q-syn-3', 'q-bass-4', 'q-busy-2', 'q-grit-2', 'q-play-2', "
 "'q-chart-1', 'q-drums-3', 'q-other-1', 'q-piano-1', 'q-vocals-2', "
 "'q-mixbeat-2']")
                                      'lastfmtags'  "['80s rare', 'indie', 'post punk', 'new wave', 'electronic', 'experimental']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '2000'
                                        'comments'  ''
                                           'genre'  'electronic-generic or radio-beats'
                                             'bpm'  '110.603'
                                             'key'  '10A'
                                        'acoustid'  ''
rest: ''

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

'TBPM' (BPM (beats per minute))                     '110.603'
'TCON' (Content type, a.k.a. Genre)                 'electronic-generic or radio-beats'
'TDRC' (Recording time)                             '2000'
'TIT2' (Title/songname/content description)         '9899'
'TKEY' (Initial key)                                '10A'
'TPE1' (Lead performer(s)/Soloist(s))               'binary'
'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'                                   ['80s rare', 'indie', 'post punk', 'new wave', 'electronic', 'experimental']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '2'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '3'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '2'
'TXXX:q-other'                                      '1'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '3'
'TXXX:q-vocals'                                     '2'
'TXXX:replaygain_track_gain'                        '-1.86 dB'
'TXXX:replaygain_track_peak'                        '0.764072'

========================== row from database ==========================
                                              'id'  159946
                                            'path'  /data/Music/Bulk/00exnnpjpsprgttidm/monotonik/monotonik-archives-vol-1/[mtk031]-binary-01-9899.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  329
                                           'genre'  electronic-generic or radio-beats
                                        'filesize'  5271139
                                           'mtime'  1620543596
                                   'redo_metaread'  0
                                        'rest_str'   00exnnpjpsprgttidm monotonik monotonik archives vol 1 [mtk031] 01 electronic generic or radio beats
                                      'tag_artist'  binary
                                     'tag_release'  None
                                       'tag_title'  9899
                                             'bpm'  110.603
                                    'search_title'  '9899':1
                                   'search_artist'  'binary':1
                                  'search_release'  
                                     'search_rest'  '1':4 'archives':2 'beats':11 'electronic':7 'generic':8 'monotonik':1 'mtk031':5,6 'or':9 'radio':10 'vol':3
                                    'search_combo'  '1':6 '9899':1A 'archives':4 'beats':13 'binary':2B 'electronic':9 'generic':10 'monotonik':3 'mtk031':7,8 'or':11 'radio':12 'vol':5
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  10A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-2', '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-3', 'q-syn-3', 'q-chart-1', 'q-other-1', 'Q-HAP-3', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['80s rare', 'indie', 'post punk', 'new wave', 'electronic', 'experimental']
                                        'tag_date'  2000
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620543595.8822231  (2021-05-09 08:59:55)
                             'size'  5271139