======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '281'
                                          'artist'  'Jerry Lee Lewis - Mercury Smashes'
                                     'text_people'  ''
                                         'release'  'country and western songbook'
                                           'title'  "The One Rose That's Left In My Heart"
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-OLDST-1', 'Q-UNU-2', 'Q-HHRNBTT-1', "
 "'Q-LOCALNESS-3', 'q-syn-1', 'q-bass-1', 'q-busy-2', 'q-grit-2', 'q-play-2', "
 "'Q-PIANO-3', 'q-chart-2', 'q-drums-1', 'q-other-3', 'q-vocals-4', "
 "'q-mixbeat-1']")
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '76'
                                      'tracktotal'  ''
                                            'date'  '1976'
                                        'comments'  ''
                                           'genre'  'loc-namerica-country'
                                             'bpm'  '94.064'
                                             'key'  '9A'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'TALB' (Album/Movie/Show title)                     'country and western songbook'
'TBPM' (BPM (beats per minute))                     '94.064'
'TCON' (Content type, a.k.a. Genre)                 'loc-namerica-country'
'TDRC' (Recording time)                             '1976'
'TIT2' (Title/songname/content description)         "The One Rose That's Left In My Heart"
'TKEY' (Initial key)                                '9A'
'TPE1' (Lead performer(s)/Soloist(s))               'Jerry Lee Lewis - Mercury Smashes'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TRCK' (Track number/Position in set)               '76'
'TSSE' (Software/Hardware and settings used for encoding)  'MediaMonkey 3.0.2'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '3'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-PIANO'                                      '3'
'TXXX:Q-UNU'                                        '2'
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '2'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '3'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+0.94 dB'
'TXXX:replaygain_track_peak'                        '0.537199'

========================== row from database ==========================
                                              'id'  1506514
                                            'path'  /data/Music/Bulk/00localcharacter/america - country and western songbook - second - 0716/76 - jerry lee lewis - the one rose that_s left in my heart.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  281
                                           'genre'  loc-namerica-country
                                        'filesize'  4523904
                                           'mtime'  1621700244
                                   'redo_metaread'  0
                                        'rest_str'   00localcharacter america second 0716 76 jerry lee lewis the one rose that_s left in my heart loc namerica
                                      'tag_artist'  Jerry Lee Lewis - Mercury Smashes
                                     'tag_release'  country and western songbook
                                       'tag_title'  The One Rose That's Left In My Heart
                                             'bpm'  94.064
                                    'search_title'  'heart':10 'in':8 'left':7 'my':9 'one':2 'rose':3 's':5 'that':4 'thats':6 'the':1
                                   'search_artist'  'jerry':1 'lee':2 'lewis':3 'mercury':4 'smashes':5
                                  'search_release'  'and':2 'country':1 'songbook':4 'western':3
                                     'search_rest'  '0716':3 '76':4 'america':1 'heart':16 'in':14 'jerry':5 'lee':6 'left':13 'lewis':7 'loc':17 'my':15 'namerica':18 'one':9 'rose':10 's':12 'second':2 'that':11 'the':8
                                    'search_combo'  '0716':22 '76':23 'america':20 'and':17C 'country':16C 'heart':10A,35 'in':8A,33 'jerry':11B,24 'lee':12B,25 'left':7A,32 'lewis':13B,26 'loc':36 'mercury':14B 'my':9A,34 'namerica':37 'one':2A,28 'rose':3A,29 's':5A,31 'second':21 'smashes':15B 'songbook':19C 'that':4A,30 'thats':6A 'the':1A,27 'western':18C
                                    'tag_tracknum'  76
                                      'num_images'  1
                                             'key'  9A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-3', 'q-mixbeat-1', 'Q-PIANO-3', 'q-play-2', 'Q-OLDST-1', 'Q-UNU-2', 'Q-JZFKS-1', 'q-busy-2', 'q-drums-1', 'q-syn-1', 'q-chart-2', 'q-other-3', 'Q-HAP-3', 'q-bass-1', 'q-grit-2']
                                      'lastfmtags'  []
                                        'tag_date'  1976
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1621700244.1238275  (2021-05-22 18:17:24)
                             'size'  4523904