======================== unified (from filesystem) ========================
                                         'bitrate'  '193.321'
                                        'duration'  '374'
                                          'artist'  'David Lyme'
                                     'text_people'  ''
                                         'release'  'I Love Disco Diamonds'
                                           'title'  'Bye Bye Mi Amor'
                                           'quals'  ("['Q-HAP-4', 'Q-UNU-1', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', 'Q-JZFKS-1', "
 "'Q-OLDST-3', 'q-syn-3', 'q-bass-2', 'q-busy-3', 'q-grit-1', 'q-play-3', "
 "'q-chart-2', 'q-drums-4', 'q-other-2', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-3']")
                                      'lastfmtags'  "['80s', 'italo disco', 'italo', 'disco']"
                                     'discogstags'  "['electronic']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '1'
                                      'tracktotal'  ''
                                            'date'  '2000'
                                        'comments'  ''
                                           'genre'  'electronic-we-disco or italo'
                                             'bpm'  '122.363'
                                             'key'  '9A'
                                        'acoustid'  ''
rest: ''

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

'COMM::XXX'                                         ' '
'COMM:iTunSMPB:eng'                                 (' 00000000 00000000 00000000 0000000000000000 00000000 00000000 00000000 '
 '00000000 00000000 00000000 00000000 00000000')
'TALB' (Album/Movie/Show title)                     'I Love Disco Diamonds'
'TBPM' (BPM (beats per minute))                     '122.363'
'TCON' (Content type, a.k.a. Genre)                 'electronic-we-disco or italo'
'TDRC' (Recording time)                             '2000'
'TIT2' (Title/songname/content description)         'Bye Bye Mi Amor'
'TKEY' (Initial key)                                '9A'
'TPE1' (Lead performer(s)/Soloist(s))               'David Lyme'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TRCK' (Track number/Position in set)               '1'
'TXXX:Q-HAP'                                        '4'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  'electronic'
'TXXX:lastfmtags'                                   ['80s', 'italo disco', 'italo', 'disco']
'TXXX:q-bass'                                       '2'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '1'
'TXXX:q-mixbeat'                                    '3'
'TXXX:q-other'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '3'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '+0.21 dB'
'TXXX:replaygain_track_peak'                        '0.475181'

========================== row from database ==========================
                                              'id'  1292601
                                            'path'  /data/Music/Bulk/00poprockelectronic-waves-disco/00disco-italo/Martinelli - The Best Italo Disco/(01) [David Lyme] Bye Bye Mi Amor.mp3
                                         'working'  None
                                         'bitrate'  193
                                    'duration_sec'  374
                                           'genre'  electronic-we-disco or italo
                                        'filesize'  9053068
                                           'mtime'  1620609604
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic waves disco 00disco italo Martinelli The Best Italo (01) [David Lyme] electronic we disco italo
                                      'tag_artist'  David Lyme
                                     'tag_release'  I Love Disco Diamonds
                                       'tag_title'  Bye Bye Mi Amor
                                             'bpm'  122.363
                                    'search_title'  'amor':3 'bye':1 'mi':2
                                   'search_artist'  'david':1 'lyme':2
                                  'search_release'  'diamonds':4 'disco':3 'i':1 'love':2
                                     'search_rest'  '00disco':4 '00poprockelectronic':1 '01':9,10 'best':8 'david':11,12 'disco':3 'electronic':15 'italo':5 'lyme':13,14 'martinelli':6 'the':7 'waves':2 'we':16
                                    'search_combo'  '00disco':13 '00poprockelectronic':10 '01':18,19 'amor':3A 'best':17 'bye':1A 'david':4B,20,21 'diamonds':9C 'disco':8C,12 'electronic':24 'i':6C 'italo':14 'love':7C 'lyme':5B,22,23 'martinelli':15 'mi':2A 'the':16 'waves':11 'we':25
                                    'tag_tracknum'  1
                                      'num_images'  0
                                             'key'  9A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-3', 'q-play-3', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-4', 'q-syn-3', 'q-chart-2', 'q-other-2', 'Q-HAP-4', 'q-bass-2', 'q-grit-1']
                                      'lastfmtags'  ['80s', 'italo disco', 'italo', 'disco']
                                        'tag_date'  2000
                                     'discogstags'  ['electronic']

============================== file details ==============================
                                           'mtime'  1620609604.4975588  (2021-05-10 03:20:04)
                             'size'  9053068