======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '55'
                                          'artist'  '[unknown]'
                                     'text_people'  ''
                                         'release'  'Trailers'
                                           'title'  'thing-with-two-heads 60'
                                           'quals'  ("['Q-HAP-3', 'Q-UNU-1', 'Q-JZFKS-1', 'Q-LOCALNESS-2', 'Q-HHRNBTT-1', "
 "'Q-OLDST-2', 'q-syn-2', 'q-bass-1', 'q-busy-2', 'q-grit-2', 'q-play-2', "
 "'q-chart-1', 'q-drums-1', 'q-other-1', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-1']")
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1970'
                                        'comments'  ''
                                           'genre'  'nonmusic-commercials-trailers;set-pl-mor'
                                             'bpm'  '84.350'
                                             'key'  '6A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Trailers'
'TBPM' (BPM (beats per minute))                     '84.350'
'TCON' (Content type, a.k.a. Genre)                 ['nonmusic-commercials-trailers', 'set-pl-mor']
'TDRC' (Recording time)                             '1970'
'TIT2' (Title/songname/content description)         'thing-with-two-heads 60'
'TKEY' (Initial key)                                '6A'
'TPE1' (Lead performer(s)/Soloist(s))               '[unknown]'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '2'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-UNU'                                        '1'
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '2'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '1'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+2.78 dB'
'TXXX:replaygain_track_peak'                        '0.485791'

========================== row from database ==========================
                                              'id'  955235
                                            'path'  /data/Music/Bulk/0nonmusic/00commercials-tv-radio-movietrailer/trailers/thing-with-two-heads_60.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  55
                                           'genre'  nonmusic-commercials-trailers;set-pl-mor
                                        'filesize'  887395
                                           'mtime'  1620528176
                                   'redo_metaread'  0
                                        'rest_str'   0nonmusic 00commercials tv radio movietrailer trailers heads_60 nonmusic commercials trailers;set pl mor
                                      'tag_artist'  [unknown]
                                     'tag_release'  Trailers
                                       'tag_title'  thing-with-two-heads 60
                                             'bpm'  84.35
                                    'search_title'  '60':6 'heads':4 'thing':1 'thingwithtwoheads':5 'two':3 'with':2
                                   'search_artist'  'unknown':1,2
                                  'search_release'  'trailers':1
                                     'search_rest'  '00commercials':2 '0nonmusic':1 '60':8 'commercials':10 'heads':7 'mor':16 'movietrailer':5 'nonmusic':9 'pl':15 'radio':4 'set':12,14 'trailers':6,11,13 'tv':3
                                    'search_combo'  '00commercials':11 '0nonmusic':10 '60':6A,17 'commercials':19 'heads':4A,16 'mor':25 'movietrailer':14 'nonmusic':18 'pl':24 'radio':13 'set':21,23 'thing':1A 'thingwithtwoheads':5A 'trailers':9C,15,20,22 'tv':12 'two':3A 'unknown':7B,8B 'with':2A
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  6A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-2', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-2', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-2', 'q-drums-1', 'q-syn-2', 'q-chart-1', 'q-other-1', 'Q-HAP-3', 'q-bass-1', 'q-grit-2']
                                      'lastfmtags'  ['mysterious', 'unknown', 'all', 'mistagged artist', 'rock']
                                        'tag_date'  1970
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620528176.0132868  (2021-05-09 04:42:56)
                             'size'  887395