======================== unified (from filesystem) ========================
                                         'bitrate'  '197.37'
                                        'duration'  '257'
                                          'artist'  'Johnny Cash'
                                     'text_people'  ''
                                         'release'  'American V: A Hundred Highways'
                                           'title'  'On The Evening Train'
                                           'quals'  ("['Q-HAP-2', 'Q-LOCALNESS-1', 'Q-JZFKS-1', 'Q-UNU-1', 'Q-OLDST-3', "
 "'Q-HHRNBTT-1', 'q-syn-2', 'q-bass-3', 'q-busy-3', 'q-grit-2', 'q-play-3', "
 "'q-chart-4', 'q-drums-1', 'q-other-3', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['country', 'singer songwritergdchill', 'cover', 'singer songwriter']"
                                     'discogstags'  "['folk, world, & country', 'country', 'gospel', 'folk']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '6'
                                      'tracktotal'  ''
                                            'date'  '2006'
                                        'comments'  ''
                                           'genre'  'ifs-songwriter'
                                             'bpm'  '132.704'
                                             'key'  '8B'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'American V: A Hundred Highways'
'TBPM' (BPM (beats per minute))                     '132.704'
'TCON' (Content type, a.k.a. Genre)                 'ifs-songwriter'
'TDRC' (Recording time)                             '2006'
'TIT2' (Title/songname/content description)         'On The Evening Train'
'TKEY' (Initial key)                                '8B'
'TPE1' (Lead performer(s)/Soloist(s))               'Johnny Cash'
'TRCK' (Track number/Position in set)               '6'
'TXXX:Q-HAP'                                        '2'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  ['folk, world, & country', 'country', 'gospel', 'folk']
'TXXX:lastfmtags'                                   ['country', 'singer songwritergdchill', 'cover', 'singer songwriter']
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '4'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+1.23 dB'
'TXXX:replaygain_track_peak'                        '0.406606'

========================== row from database ==========================
                                              'id'  1308160
                                            'path'  /data/Music/Bulk/00poprockelectronic/Unsorted/2006/20060801__cifsc9ed.mp3
                                         'working'  None
                                         'bitrate'  197
                                    'duration_sec'  257
                                           'genre'  ifs-songwriter
                                        'filesize'  6356438
                                           'mtime'  1637330760
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic Unsorted 2006 20060801__cifsc9ed ifs songwriter
                                      'tag_artist'  Johnny Cash
                                     'tag_release'  American V: A Hundred Highways
                                       'tag_title'  On The Evening Train
                                             'bpm'  132.704
                                    'search_title'  'evening':3 'on':1 'the':2 'train':4
                                   'search_artist'  'cash':2 'johnny':1
                                  'search_release'  'a':4 'american':1 'highways':6 'hundred':5 'v':2,3
                                     'search_rest'  '00poprockelectronic':1 '2006':3 '20060801':4 'cifsc9ed':5 'ifs':6 'songwriter':7 'unsorted':2
                                    'search_combo'  '00poprockelectronic':13 '2006':15 '20060801':16 'a':10C 'american':7C 'cash':6B 'cifsc9ed':17 'evening':3A 'highways':12C 'hundred':11C 'ifs':18 'johnny':5B 'on':1A 'songwriter':19 'the':2A 'train':4A 'unsorted':14 'v':8C,9C
                                    'tag_tracknum'  6
                                      'num_images'  0
                                             'key'  8B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-3', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-1', 'q-syn-2', 'q-chart-4', 'q-other-3', 'Q-HAP-2', 'q-bass-3', 'q-grit-2']
                                      'lastfmtags'  ['country', 'singer songwritergdchill', 'cover', 'singer songwriter']
                                        'tag_date'  2006
                                     'discogstags'  ['folk, world, & country', 'country', 'gospel', 'folk']

============================== file details ==============================
                                           'mtime'  1637330760.2385664  (2021-11-19 15:06:00)
                             'size'  6356438