======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '169'
                                          'artist'  'Pev'
                                     'text_people'  ''
                                         'release'  ''
                                           'title'  "& Hodge 'Bells' (System mix) "
                                           'quals'  ("['Q-MIXBEAT-3', 'Q-HAP-2', 'Q-UNU-1', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', "
 "'Q-JZFKS-1', 'Q-OLDST-3', 'q-syn-4', 'q-bass-4', 'q-busy-3', 'q-grit-2', "
 "'q-play-3', 'q-chart-1', 'q-drums-4', 'q-other-1', 'q-piano-1', "
 "'q-vocals-1']")
                                      'lastfmtags'  "['ukbass', 'all', 'techno', 'dubstep']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '2015'
                                        'comments'  ''
                                           'genre'  'electronic-th-techno-minimal or deephouse'
                                             'bpm'  '120.1'
                                             'key'  '3A'
                                        'acoustid'  ''
rest: ''

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

'TBPM' (BPM (beats per minute))                     '120.1'
'TCON' (Content type, a.k.a. Genre)                 'electronic-th-techno-minimal or deephouse'
'TDRC' (Recording time)                             '2015'
'TIT2' (Title/songname/content description)         "& Hodge 'Bells' (System mix) "
'TKEY' (Initial key)                                '3A'
'TPE1' (Lead performer(s)/Soloist(s))               'Pev'
'TXXX:Q-HAP'                                        '2'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-MIXBEAT'                                    '3'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['ukbass', 'all', 'techno', 'dubstep']
'TXXX:other'                                        '88399458'
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '2'
'TXXX:q-other'                                      '1'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '4'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '-4.81 dB'
'TXXX:replaygain_track_peak'                        '0.791533'

========================== row from database ==========================
                                              'id'  1497075
                                            'path'  /data/Music/Bulk/00exnnpjpsprgttidm/soundcloud/punchdrunkrecords/Pev & Hodge _Bells_ (System mix) clip (Punch Drunk Records) 12_-88399458.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  169
                                           'genre'  electronic-th-techno-minimal or deephouse
                                        'filesize'  2720534
                                           'mtime'  1621085002
                                   'redo_metaread'  0
                                        'rest_str'   00exnnpjpsprgttidm soundcloud punchdrunkrecords _Bells_ clip (Punch Drunk Records) 12_ 88399458 electronic th techno minimal or deephouse
                                      'tag_artist'  Pev
                                     'tag_release'  None
                                       'tag_title'  & Hodge 'Bells' (System mix) 
                                             'bpm'  120.1
                                    'search_title'  'bells':2,3 'hodge':1 'mix':6,7 'system':4,5
                                   'search_artist'  'pev':1
                                  'search_release'  
                                     'search_rest'  '12':10 '88399458':11 'bells':3 'clip':4 'deephouse':17 'drunk':7 'electronic':12 'minimal':15 'or':16 'punch':5,6 'punchdrunkrecords':2 'records':8,9 'soundcloud':1 'techno':14 'th':13
                                    'search_combo'  '12':18 '88399458':19 'bells':2A,3A,11 'clip':12 'deephouse':25 'drunk':15 'electronic':20 'hodge':1A 'minimal':23 'mix':6A,7A 'or':24 'pev':8B 'punch':13,14 'punchdrunkrecords':10 'records':16,17 'soundcloud':9 'system':4A,5A 'techno':22 'th':21
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  3A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-1', 'q-piano-1', 'Q-MIXBEAT-3', 'q-play-3', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-4', 'q-syn-4', 'q-chart-1', 'q-other-1', 'Q-HAP-2', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['ukbass', 'all', 'techno', 'dubstep']
                                        'tag_date'  2015
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1621085002.343175  (2021-05-15 15:23:22)
                             'size'  2720534