======================== unified (from filesystem) ========================
                                         'bitrate'  '235.999'
                                        'duration'  '162'
                                          'artist'  'The Spotnicks'
                                     'text_people'  ''
                                         'release'  'The Spotnicks in Winterland'
                                           'title'  'I Saw Mama Kissing Santa Claus'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-UNU-1', 'Q-HHRNBTT-1', 'Q-LOCALNESS-1', "
 "'Q-OLDST-2', 'q-syn-2', 'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-3', "
 "'q-chart-2', 'q-drums-3', 'q-other-4', 'q-piano-1', 'q-vocals-1', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['instrumental', 'surf', 'ed hits', 'guitar', '60s']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '4'
                                      'tracktotal'  ''
                                            'date'  '1966'
                                        'comments'  ''
                                           'genre'  'rock-pop-surf'
                                             'bpm'  '110.8'
                                             'key'  '3A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'The Spotnicks in Winterland'
'TBPM' (BPM (beats per minute))                     '110.8'
'TCON' (Content type, a.k.a. Genre)                 'rock-pop-surf'
'TDRC' (Recording time)                             '1966'
'TIT2' (Title/songname/content description)         'I Saw Mama Kissing Santa Claus'
'TKEY' (Initial key)                                '3A'
'TPE1' (Lead performer(s)/Soloist(s))               'The Spotnicks'
'TPE2' (Band/orchestra/accompaniment)               'The Spotnicks'
'TPUB' (Publisher)                                  'SweDisc'
'TRCK' (Track number/Position in set)               '4'
'TSSE' (Software/Hardware and settings used for encoding)  'Lavf56.40.101'
'TXXX:DeviceConformanceTemplate'                    'L1'
'TXXX:IsVBR'                                        '0'
'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:WM/EncodingTime'                              '18446744072512533376'
'TXXX:WM/MediaPrimaryClassID'                       '{D1607DBC-E323-4BE2-86A1-48A42A28441E}'
'TXXX:WM/Provider'                                  'AMG'
'TXXX:WM/ProviderRating'                            '0'
'TXXX:WM/ProviderStyle'                             'Rock'
'TXXX:WM/UniqueFileIdentifier'                      'AMGa_id=R   583772;AMGp_id=P    20695;AMGt_id=T  5422421'
'TXXX:WM/WMADRCAverageReference'                    '5719'
'TXXX:WM/WMADRCPeakReference'                       '32160'
'TXXX:WM/Year'                                      '1966'
'TXXX:WMFSDKNeeded'                                 '0.0.0.0000'
'TXXX:WMFSDKVersion'                                '9.00.00.3250'
'TXXX:lastfmtags'                                   ['instrumental', 'surf', 'ed hits', 'guitar', '60s']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '3'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '4'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '+1.76 dB'
'TXXX:replaygain_track_peak'                        '0.467454'

========================== row from database ==========================
                                              'id'  968653
                                            'path'  /data/Music/Bulk/00exnnpjpsprgttidm/The Spotnicks-1962-1990-23 cd/The Spotnicks-1966-In Winterland/04 I Saw Mama Kissing Santa Claus.wma.mp3
                                         'working'  None
                                         'bitrate'  236
                                    'duration_sec'  162
                                           'genre'  rock-pop-surf
                                        'filesize'  4807092
                                           'mtime'  1620736672
                                   'redo_metaread'  0
                                        'rest_str'   00exnnpjpsprgttidm 1962 1990 23 cd 1966 In 04 Claus.wma rock pop surf
                                      'tag_artist'  The Spotnicks
                                     'tag_release'  The Spotnicks in Winterland
                                       'tag_title'  I Saw Mama Kissing Santa Claus
                                             'bpm'  110.8
                                    'search_title'  'claus':6 'i':1 'kissing':4 'mama':3 'santa':5 'saw':2
                                   'search_artist'  'spotnicks':2 'the':1
                                  'search_release'  'in':3 'spotnicks':2 'the':1 'winterland':4
                                     'search_rest'  '1962':1 '1966':5 '1990':2 '23':3 'cd':4 'claus':7 'clauswma':9 'in':6 'pop':11 'rock':10 'surf':12 'wma':8
                                    'search_combo'  '1962':13 '1966':17 '1990':14 '23':15 'cd':16 'claus':6A,19 'clauswma':21 'i':1A 'in':11C,18 'kissing':4A 'mama':3A 'pop':23 'rock':22 'santa':5A 'saw':2A 'spotnicks':8B,10C 'surf':24 'the':7B,9C 'winterland':12C 'wma':20
                                    'tag_tracknum'  4
                                      'num_images'  0
                                             'key'  3A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-3', 'Q-OLDST-2', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-3', 'q-syn-2', 'q-chart-2', 'q-other-4', 'Q-HAP-3', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['instrumental', 'surf', 'ed hits', 'guitar', '60s']
                                        'tag_date'  1966
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620736671.8253243  (2021-05-11 14:37:51)
                             'size'  4807092