======================== unified (from filesystem) ========================
                                         'bitrate'  '123.146'
                                        'duration'  '229'
                                          'artist'  'Virginia Astley'
                                     'text_people'  ''
                                         'release'  'Dimitri - PopTropic'
                                           'title'  'Melt the Snow'
                                           '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-1', "
 "'Q-CHART-2', 'q-drums-1', 'q-other-3', 'q-piano-1', 'q-vocals-4', "
 "'Q-MIXBEAT-2']")
                                      'lastfmtags'  "['female vocalists', 'dream pop', 'dreamy', 'ethereal', 'ambient', 'piano']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  ''
                                        'comments'  ''
                                           'genre'  'ifs-songwriter'
                                             'bpm'  '112.1'
                                             'key'  '6A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Dimitri - PopTropic'
'TBPM' (BPM (beats per minute))                     '112.1'
'TCON' (Content type, a.k.a. Genre)                 'ifs-songwriter'
'TIT2' (Title/songname/content description)         'Melt the Snow'
'TKEY' (Initial key)                                '6A'
'TPE1' (Lead performer(s)/Soloist(s))               'Virginia Astley'
'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'                                   ['female vocalists', 'dream pop', 'dreamy', 'ethereal', 'ambient', 'piano']
'TXXX:q-bass'                                       '1'
'TXXX:q-drums'                                      '1'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+1.57 dB'
'TXXX:replaygain_track_peak'                        '0.596135'
'TXXX:youtube'                                      'UzDlmnn6Fn4'

========================== row from database ==========================
                                              'id'  1477463
                                            'path'  /data/Music/Bulk/00exnnpjpsprgttidm/Dimitri/PopTropic/Virginia Astley - Melt the Snow-UzDlmnn6Fn4.mp3
                                         'working'  None
                                         'bitrate'  123
                                    'duration_sec'  229
                                           'genre'  ifs-songwriter
                                        'filesize'  3541809
                                           'mtime'  1637329496
                                   'redo_metaread'  0
                                        'rest_str'   00exnnpjpsprgttidm UzDlmnn6Fn4 ifs songwriter
                                      'tag_artist'  Virginia Astley
                                     'tag_release'  Dimitri - PopTropic
                                       'tag_title'  Melt the Snow
                                             'bpm'  112.1
                                    'search_title'  'melt':1 'snow':3 'the':2
                                   'search_artist'  'astley':2 'virginia':1
                                  'search_release'  'dimitri':1 'pop':3 'poptropic':2 'tropic':4
                                     'search_rest'  'dlmnn6fn4':5 'ifs':2 'songwriter':3 'uz':4 'uzdlmnn6fn4':1
                                    'search_combo'  'astley':5B 'dimitri':6C 'dlmnn6fn4':14 'ifs':11 'melt':1A 'pop':8C 'poptropic':7C 'snow':3A 'songwriter':12 'the':2A 'tropic':9C 'uz':13 'uzdlmnn6fn4':10 'virginia':4B
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  6A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', '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-3', 'Q-BUSY-3', 'Q-HAP-2', 'Q-PLAY-3', 'q-bass-1']
                                      'lastfmtags'  ['female vocalists', 'dream pop', 'dreamy', 'ethereal', 'ambient', 'piano']
                                        'tag_date'  
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1637329495.7352223  (2021-11-19 14:44:55)
                             'size'  3541809