======================== unified (from filesystem) ========================
                                         'bitrate'  '193.349'
                                        'duration'  '227'
                                          'artist'  'Melanie Safka'
                                     'text_people'  'Woody Guthrie'
                                         'release'  'Melanie at Carnegie Hall'
                                           'title'  'Pretty Boy Floyd'
                                           'quals'  ("['Q-HAP-2', 'Q-LOCALNESS-1', 'Q-UNU-1', 'Q-JZFKS-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-2', 'q-syn-2', 'q-bass-1', 'q-busy-3', 'q-grit-2', 'q-play-2', "
 "'q-chart-2', 'q-drums-1', 'q-other-3', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['folk', 'singer-songwriter', 'female vocalists', '60s', 'pop']"
                                     'discogstags'  "['folk, world, & country']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '05'
                                      'tracktotal'  ''
                                            'date'  '1973'
                                        'comments'  ''
                                           'genre'  'ifs-folk-rock'
                                             'bpm'  '138.987'
                                             'key'  '3B'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Melanie at Carnegie Hall'
'TBPM' (BPM (beats per minute))                     '138.987'
'TCOM' (Composer)                                   'Woody Guthrie'
'TCON' (Content type, a.k.a. Genre)                 'ifs-folk-rock'
'TDRC' (Recording time)                             '1973'
'TENC' (Encoded by)                                 'Victor Wedge - May 2001'
'TIT2' (Title/songname/content description)         'Pretty Boy Floyd'
'TKEY' (Initial key)                                '3B'
'TPE1' (Lead performer(s)/Soloist(s))               'Melanie Safka'
'TRCK' (Track number/Position in set)               '05'
'TXXX:Q-HAP'                                        '2'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  'folk, world, & country'
'TXXX:lastfmtags'                                   ['folk', 'singer-songwriter', 'female vocalists', '60s', 'pop']
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+2.12 dB'
'TXXX:replaygain_track_peak'                        '0.587328'

========================== row from database ==========================
                                              'id'  1283119
                                            'path'  /data/Music/Bulk/00poprockelectronic/Melanie/At Carnegie Hall/5 - Pretty Boy Floyd.mp3
                                         'working'  None
                                         'bitrate'  193
                                    'duration_sec'  227
                                           'genre'  ifs-folk-rock
                                        'filesize'  5492608
                                           'mtime'  1637330746
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic At 5 ifs folk rock
                                      'tag_artist'  Melanie Safka
                                     'tag_release'  Melanie at Carnegie Hall
                                       'tag_title'  Pretty Boy Floyd
                                             'bpm'  138.987
                                    'search_title'  'boy':2 'floyd':3 'pretty':1
                                   'search_artist'  'melanie':1 'safka':2
                                  'search_release'  'at':2 'carnegie':3 'hall':4 'melanie':1
                                     'search_rest'  '00poprockelectronic':1 '5':3 'at':2 'folk':5 'ifs':4 'rock':6
                                    'search_combo'  '00poprockelectronic':10 '5':12 'at':7C,11 'boy':2A 'carnegie':8C 'floyd':3A 'folk':14 'hall':9C 'ifs':13 'melanie':4B,6C 'pretty':1A 'rock':15 'safka':5B
                                    'tag_tracknum'  5
                                      'num_images'  0
                                             'key'  3B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-2', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-1', 'q-syn-2', 'q-chart-2', 'q-other-3', 'Q-HAP-2', 'q-bass-1', 'q-grit-2']
                                      'lastfmtags'  ['folk', 'singer-songwriter', 'female vocalists', '60s', 'pop']
                                        'tag_date'  1973
                                     'discogstags'  ['folk, world, & country']

============================== file details ==============================
                                           'mtime'  1637330746.0845373  (2021-11-19 15:05:46)
                             'size'  5492608