======================== unified (from filesystem) ========================
                                         'bitrate'  '320.0'
                                        'duration'  '1508'
                                          'artist'  'Squid Ethics'
                                     'text_people'  ''
                                         'release'  ''
                                           'title'  'Side A'
                                           'quals'  ("['Q-HAP-3', 'Q-UNU-1', 'q-syn-3', 'q-bass-3', 'q-busy-3', 'q-grit-2', "
 "'q-play-2', 'Q-JZFKS-2', 'Q-OLDST-3', 'q-chart-2', 'q-drums-4', 'q-other-3', "
 "'q-piano-1', 'q-vocals-2', 'Q-HHRNBTT-3', 'q-mixbeat-3', 'Q-LOCALNESS-1']")
                                      'lastfmtags'  "['beats', 'instrumental hip hop']"
                                     'discogstags'  "['instrumental', 'electronic', 'hip hop', 'experimental']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '2015'
                                        'comments'  ''
                                           'genre'  'hip hop or rnb or rap or turntablism-chillhop'
                                             'bpm'  '90.5'
                                             'key'  '8A'
                                        'acoustid'  ''
rest: ''

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

'TBPM' (BPM (beats per minute))                     '90.5'
'TCON' (Content type, a.k.a. Genre)                 'hip hop or rnb or rap or turntablism-chillhop'
'TDRC' (Recording time)                             '2015'
'TIT2' (Title/songname/content description)         'Side A'
'TKEY' (Initial key)                                '8A'
'TLEN' (Length)                                     '1508800'
'TPE1' (Lead performer(s)/Soloist(s))               'Squid Ethics'
'TSSE' (Software/Hardware and settings used for encoding)  'LAME 32bits version 3.99.5 (http://lame.sf.net)'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '3'
'TXXX:Q-JZFKS'                                      '2'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  ['instrumental', 'electronic', 'hip hop', 'experimental']
'TXXX:lastfmtags'                                   ['beats', 'instrumental hip hop']
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '3'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '3'
'TXXX:q-vocals'                                     '2'
'TXXX:replaygain_track_gain'                        '+1.71 dB'
'TXXX:replaygain_track_peak'                        '0.872377'

========================== row from database ==========================
                                              'id'  1241717
                                            'path'  /data/Music/Bulk/00popandrock-hiphop-rap-rnb-turntablism/Flughand - Chillhop/Squid Ethics - Side A.mp3
                                         'working'  None
                                         'bitrate'  320
                                    'duration_sec'  1508
                                           'genre'  hip hop or rnb or rap or turntablism-chillhop
                                        'filesize'  60356677
                                           'mtime'  1620583436
                                   'redo_metaread'  0
                                        'rest_str'   00popandrock hiphop rap rnb turntablism Flughand Chillhop hip hop or rnb or rap or turntablism chillhop
                                      'tag_artist'  Squid Ethics
                                     'tag_release'  None
                                       'tag_title'  Side A
                                             'bpm'  90.5
                                    'search_title'  'a':2 'side':1
                                   'search_artist'  'ethics':2 'squid':1
                                  'search_release'  
                                     'search_rest'  'chillhop':6 'flughand':5 'hip':7 'hiphop':1 'hop':8 'or':9 'rap':2 'rnb':3 'turntablism':4
                                    'search_combo'  'a':2A 'chillhop':10 'ethics':4B 'flughand':9 'hip':11 'hiphop':5 'hop':12 'or':13 'rap':6 'rnb':7 'side':1A 'squid':3B 'turntablism':8
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  8A
                                           'quals'  ['Q-HHRNBTT-3', 'q-vocals-2', 'Q-LOCALNESS-1', 'q-mixbeat-3', 'q-play-2', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-2', 'q-busy-3', 'q-drums-4', 'q-piano-1', 'q-syn-3', 'q-chart-2', 'q-other-3', 'Q-HAP-3', 'q-bass-3', 'q-grit-2']
                                      'lastfmtags'  ['beats', 'instrumental hip hop']
                                        'tag_date'  2015
                                     'discogstags'  ['instrumental', 'electronic', 'hip hop', 'experimental']

============================== file details ==============================
                                           'mtime'  1620583435.6887636  (2021-05-09 20:03:55)
                             'size'  60356677