======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '161'
                                          'artist'  'The Flirtations'
                                     'text_people'  ''
                                         'release'  "Time-Life Classic Rock: 1969 - Shakin' All Over"
                                           'title'  'Nothing But A Heartache'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', 'Q-UNU-1', "
 "'Q-OLDST-2', 'q-syn-2', 'q-bass-3', 'q-busy-3', 'q-grit-2', 'q-play-2', "
 "'q-chart-2', 'q-drums-3', 'q-other-2', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-2']")
                                      'lastfmtags'  "['pop', 'northern soul', 'female vocalists', 'soul', '60s']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '5'
                                      'tracktotal'  '21'
                                            'date'  '1969'
                                        'comments'  ''
                                           'genre'  'funk or soul'
                                             'bpm'  '112.445'
                                             'key'  '3A'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'PRIV:WM/MediaClassPrimaryID:¼}`Ñ#ãâK\x86¡H¤*(D\x1e'  PRIV(owner='WM/MediaClassPrimaryID', data=b'\xbc}`\xd1#\xe3\xe2K\x86\xa1H\xa4*(D\x1e')
'PRIV:WM/MediaClassSecondaryID:\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00'  PRIV(owner='WM/MediaClassSecondaryID', data=b'\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00')
'TALB' (Album/Movie/Show title)                     "Time-Life Classic Rock: 1969 - Shakin' All Over"
'TBPM' (BPM (beats per minute))                     '112.445'
'TCON' (Content type, a.k.a. Genre)                 'funk or soul'
'TDRC' (Recording time)                             '1969'
'TIT2' (Title/songname/content description)         'Nothing But A Heartache'
'TKEY' (Initial key)                                '3A'
'TLEN' (Length)                                     '0'
'TPE1' (Lead performer(s)/Soloist(s))               'The Flirtations'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TPOS' (Part of a set)                              '1/1'
'TRCK' (Track number/Position in set)               '5/21'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['pop', 'northern soul', 'female vocalists', 'soul', '60s']
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '3'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '2'
'TXXX:q-other'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '-0.75 dB'
'TXXX:replaygain_track_peak'                        '0.545627'

========================== row from database ==========================
                                              'id'  1286545
                                            'path'  /data/Music/Bulk/00poprockelectronic/Unsorted/[loose files]/nothing but a heartache(2).mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  161
                                           'genre'  funk or soul
                                        'filesize'  3915408
                                           'mtime'  1628357699
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic Unsorted [loose files] nothing but heartache(2) funk or soul
                                      'tag_artist'  The Flirtations
                                     'tag_release'  Time-Life Classic Rock: 1969 - Shakin' All Over
                                       'tag_title'  Nothing But A Heartache
                                             'bpm'  112.445
                                    'search_title'  'a':3 'but':2 'heartache':4 'nothing':1
                                   'search_artist'  'flirtations':2 'the':1
                                  'search_release'  '1969':7 'all':10 'classic':4 'life':2 'over':11 'rock':5,6 'shakin':8,9 'time':1 'timelife':3
                                     'search_rest'  '00poprockelectronic':1 '2':10 'but':8 'files':5,6 'funk':12 'heartache':9 'heartache2':11 'loose':3,4 'nothing':7 'or':13 'soul':14 'unsorted':2
                                    'search_combo'  '00poprockelectronic':18 '1969':13C '2':27 'a':3A 'all':16C 'but':2A,25 'classic':10C 'files':22,23 'flirtations':6B 'funk':29 'heartache':4A,26 'heartache2':28 'life':8C 'loose':20,21 'nothing':1A,24 'or':30 'over':17C 'rock':11C,12C 'shakin':14C,15C 'soul':31 'the':5B 'time':7C 'timelife':9C 'unsorted':19
                                    'tag_tracknum'  5
                                      'num_images'  1
                                             'key'  3A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-2', 'q-play-2', 'Q-OLDST-2', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-3', 'q-syn-2', 'q-chart-2', 'q-other-2', 'Q-HAP-3', 'q-bass-3', 'q-grit-2']
                                      'lastfmtags'  ['pop', 'northern soul', 'female vocalists', 'soul', '60s']
                                        'tag_date'  1969
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1628357698.6284537  (2021-08-07 19:34:58)
                             'size'  3915408