======================== unified (from filesystem) ========================
                                         'bitrate'  '112.526'
                                        'duration'  '155'
                                          'artist'  'Peter Howell & John Ferdinando'
                                     'text_people'  ''
                                         'release'  'Dimitri - Folk, Rock, Pop & Instruments'
                                           'title'  'Tomorrow Come Today'
                                           'quals'  ("['Q-HAP-2', 'Q-UNU-1', 'Q-LOCALNESS-1', 'Q-OLDST-3', 'Q-JZFKS-1', "
 "'Q-HHRNBTT-1', 'Q-SYN-2', 'Q-BUSY-3', 'Q-GRIT-2', 'Q-PLAY-3', 'q-bass-3', "
 "'Q-CHART-2', 'q-drums-1', 'q-other-4', 'q-piano-1', 'q-vocals-3', "
 "'Q-MIXBEAT-2']")
                                     'discogstags'  "['folk, world, & country', 'folk']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  ''
                                        'comments'  ''
                                           'genre'  'ifs-songwriter'
                                             'bpm'  '118.7'
                                             'key'  '9A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Dimitri - Folk, Rock, Pop & Instruments'
'TBPM' (BPM (beats per minute))                     '118.7'
'TCON' (Content type, a.k.a. Genre)                 'ifs-songwriter'
'TIT2' (Title/songname/content description)         'Tomorrow Come Today'
'TKEY' (Initial key)                                '9A'
'TPE1' (Lead performer(s)/Soloist(s))               'Peter Howell & John Ferdinando'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TSSE' (Software/Hardware and settings used for encoding)  'Lavf58.45.100'
'TXXX:Q-BUSY'                                       '3'
'TXXX:Q-CHART'                                      '2'
'TXXX:Q-GRIT'                                       '2'
'TXXX:Q-HAP'                                        '2'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-MIXBEAT'                                    '2'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-PLAY'                                       '3'
'TXXX:Q-SYN'                                        '2'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  ['folk, world, & country', 'folk']
'TXXX:q-bass'                                       '3'
'TXXX:q-drums'                                      '1'
'TXXX:q-other'                                      '4'
'TXXX:q-piano'                                      '1'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '-0.76 dB'
'TXXX:replaygain_track_peak'                        '0.721617'
'TXXX:youtube'                                      ' Tomorrow Come Someday-G0eYPrEPXjY'

========================== row from database ==========================
                                              'id'  1477343
                                            'path'  /data/Music/Bulk/00exnnpjpsprgttidm/Dimitri/FolkRockPopInstrumentals/Peter Howell & John Ferdinando -[09]- Tomorrow Come Someday-G0eYPrEPXjY.mp3
                                         'working'  None
                                         'bitrate'  112
                                    'duration_sec'  155
                                           'genre'  ifs-songwriter
                                        'filesize'  2186903
                                           'mtime'  1637329485
                                   'redo_metaread'  0
                                        'rest_str'   00exnnpjpsprgttidm FolkRockPopInstrumentals [09] Someday G0eYPrEPXjY ifs songwriter
                                      'tag_artist'  Peter Howell & John Ferdinando
                                     'tag_release'  Dimitri - Folk, Rock, Pop & Instruments
                                       'tag_title'  Tomorrow Come Today
                                             'bpm'  118.7
                                    'search_title'  'come':2 'today':3 'tomorrow':1
                                   'search_artist'  'ferdinando':4 'howell':2 'john':3 'peter':1
                                  'search_release'  'dimitri':1 'folk':2,3 'instruments':7 'pop':6 'rock':4,5
                                     'search_rest'  '09':2,3 'epxj':14 'folk':8 'folkrockpopinstrumentals':1 'g0e':12 'g0eyprepxjy':5 'ifs':6 'instrumentals':11 'pop':10 'rock':9 'someday':4 'songwriter':7 'y':15 'ypr':13
                                    'search_combo'  '09':16,17 'come':2A 'dimitri':8C 'epxj':28 'ferdinando':7B 'folk':9C,10C,22 'folkrockpopinstrumentals':15 'g0e':26 'g0eyprepxjy':19 'howell':5B 'ifs':20 'instrumentals':25 'instruments':14C 'john':6B 'peter':4B 'pop':13C,24 'rock':11C,12C,23 'someday':18 'songwriter':21 'today':3A 'tomorrow':1A 'y':29 'ypr':27
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  9A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-1', 'q-piano-1', 'Q-MIXBEAT-2', 'Q-OLDST-3', 'Q-GRIT-2', 'Q-UNU-1', 'Q-JZFKS-1', 'Q-CHART-2', 'q-drums-1', 'Q-SYN-2', 'q-other-4', 'Q-BUSY-3', 'Q-HAP-2', 'Q-PLAY-3', 'q-bass-3']
                                      'lastfmtags'  []
                                        'tag_date'  
                                     'discogstags'  ['folk, world, & country', 'folk']

============================== file details ==============================
                                           'mtime'  1637329484.971635  (2021-11-19 14:44:44)
                             'size'  2186903