======================== unified (from filesystem) ========================
                                         'bitrate'  '121.107'
                                        'duration'  '248'
                                          'artist'  'Al Dobson Jr'
                                     'text_people'  ''
                                         'release'  'Dimitri - Intrumental'
                                           'title'  'Mr Mellow'
                                           'quals'  ("['Q-HAP-2', 'Q-JZFKS-1', 'Q-UNU-1', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-3', 'Q-SYN-2', 'Q-BUSY-3', 'Q-GRIT-2', 'Q-PLAY-3', 'q-bass-4', "
 "'Q-CHART-2', 'q-drums-4', 'q-other-1', 'q-piano-1', 'q-vocals-2', "
 "'Q-MIXBEAT-2']")
                                      'lastfmtags'  "['beats', 'the best mixes']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  ''
                                        'comments'  ''
                                           'genre'  'electronic-experimental'
                                             'bpm'  '114.4'
                                             'key'  '12A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Dimitri - Intrumental'
'TBPM' (BPM (beats per minute))                     '114.4'
'TCON' (Content type, a.k.a. Genre)                 'electronic-experimental'
'TIT2' (Title/songname/content description)         'Mr Mellow'
'TKEY' (Initial key)                                '12A'
'TPE1' (Lead performer(s)/Soloist(s))               'Al Dobson Jr'
'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:lastfmtags'                                   ['beats', 'the best mixes']
'TXXX:q-bass'                                       '4'
'TXXX:q-drums'                                      '4'
'TXXX:q-other'                                      '1'
'TXXX:q-piano'                                      '1'
'TXXX:q-vocals'                                     '2'
'TXXX:replaygain_track_gain'                        '-0.93 dB'
'TXXX:replaygain_track_peak'                        '0.844065'
'TXXX:youtube'                                      'GjcgZByLutw'

========================== row from database ==========================
                                              'id'  1477689
                                            'path'  /data/Music/Bulk/00exnnpjpsprgttidm/Dimitri/Instrumental/Al Dobson Jr - Mr Mellow-GjcgZByLutw.mp3
                                         'working'  None
                                         'bitrate'  121
                                    'duration_sec'  248
                                           'genre'  electronic-experimental
                                        'filesize'  3759586
                                           'mtime'  1636916856
                                   'redo_metaread'  0
                                        'rest_str'   00exnnpjpsprgttidm Instrumental GjcgZByLutw electronic experimental
                                      'tag_artist'  Al Dobson Jr
                                     'tag_release'  Dimitri - Intrumental
                                       'tag_title'  Mr Mellow
                                             'bpm'  114.4
                                    'search_title'  'mellow':2 'mr':1
                                   'search_artist'  'al':1 'dobson':2 'jr':3
                                  'search_release'  'dimitri':1 'intrumental':2
                                     'search_rest'  'electronic':3 'experimental':4 'gjcg':5 'gjcgzbylutw':2 'instrumental':1 'lutw':7 'zby':6
                                    'search_combo'  'al':3B 'dimitri':6C 'dobson':4B 'electronic':10 'experimental':11 'gjcg':12 'gjcgzbylutw':9 'instrumental':8 'intrumental':7C 'jr':5B 'lutw':14 'mellow':2A 'mr':1A 'zby':13
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  12A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-2', '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-4', 'Q-SYN-2', 'q-other-1', 'Q-BUSY-3', 'Q-HAP-2', 'Q-PLAY-3', 'q-bass-4']
                                      'lastfmtags'  ['beats', 'the best mixes']
                                        'tag_date'  
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1636916856.1338089  (2021-11-14 20:07:36)
                             'size'  3759586