======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '353'
                                          'artist'  'Natural Language'
                                     'text_people'  ''
                                         'release'  'Natural Language 0098'
                                           'title'  'Rubber Hammer'
                                           'quals'  ("['Q-JZFKS-2', 'Q-HAP-3', 'Q-UNU-1', 'Q-HHRNBTT-1', 'Q-OLDST-3', "
 "'Q-LOCALNESS-1', 'q-syn-3', 'q-bass-4', 'q-busy-1', 'q-grit-2', 'q-play-3', "
 "'q-chart-1', 'q-drums-1', 'q-other-4', 'q-piano-1', 'q-vocals-1', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['minimalism', 'jazz', 'avant garde', 'experimental', 'ambient']"
                                     'discogstags'  "['abstract', 'acid jazz', 'electronic', 'ambient']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '6'
                                      'tracktotal'  '9'
                                            'date'  '1998'
                                        'comments'  ''
                                           'genre'  'electronic-ambient'
                                             'bpm'  '145.3'
                                             'key'  '3B'
                                        'acoustid'  'c3069846-15df-4a68-a5bb-2b253166b81a'
rest: ''

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

'COMM:iTunes_CDDB_IDs:eng'                          '10++'
'TALB' (Album/Movie/Show title)                     'Natural Language 0098'
'TBPM' (BPM (beats per minute))                     '145.3'
'TCON' (Content type, a.k.a. Genre)                 'electronic-ambient'
'TDOR' (Original release time)                      '1998'
'TDRC' (Recording time)                             '1998-08-04'
'TENC' (Encoded by)                                 'iTunes v2.0.2'
'TIT2' (Title/songname/content description)         'Rubber Hammer'
'TKEY' (Initial key)                                '3B'
'TMED' (Media type)                                 'CD'
'TPE1' (Lead performer(s)/Soloist(s))               'Natural Language'
'TPE2' (Band/orchestra/accompaniment)               'Natural Language'
'TPOS' (Part of a set)                              '1/1'
'TPUB' (Publisher)                                  'em:t'
'TRCK' (Track number/Position in set)               '6/9'
'TSO2'                                              'Natural Language'
'TSOP' (Performer sort order)                       'Natural Language'
'TXXX:ASIN'                                         'B00004VDK3'
'TXXX:Acoustid Id'                                  'c3069846-15df-4a68-a5bb-2b253166b81a'
'TXXX:BARCODE'                                      '5025989980025'
'TXXX:CATALOGNUMBER'                                '0098'
'TXXX:MusicBrainz Album Artist Id'                  '3cea075d-8e6e-4731-99bf-58d748d291b3'
'TXXX:MusicBrainz Album Id'                         '28d5f40f-b127-440c-b72b-c95a3b62dcad'
'TXXX:MusicBrainz Album Release Country'            'GB'
'TXXX:MusicBrainz Album Status'                     'official'
'TXXX:MusicBrainz Album Type'                       'album'
'TXXX:MusicBrainz Artist Id'                        '3cea075d-8e6e-4731-99bf-58d748d291b3'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '2'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:SCRIPT'                                       'Latn'
'TXXX:discogstags'                                  ['abstract', 'acid jazz', 'electronic', 'ambient']
'TXXX:lastfmtags'                                   ['minimalism', 'jazz', 'avant garde', 'experimental', 'ambient']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '1'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '4'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '3'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '-0.46 dB'
'TXXX:replaygain_track_peak'                        '0.992665'
'UFID:http://musicbrainz.org'                       UFID(owner='http://musicbrainz.org', data=b'709a7671-58fd-41a1-a405-e1dd4983cded')

========================== row from database ==========================
                                              'id'  1368437
                                            'path'  /data/Music/Bulk/00poprockelectronic/00ambient/Natural Language - EMiT 0098/Natural Language (Hywel Davies)/06 rubber hammer.mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  353
                                           'genre'  electronic-ambient
                                        'filesize'  8477980
                                           'mtime'  1639508615
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic 00ambient EMiT (Hywel Davies) 06 rubber hammer electronic ambient
                                      'tag_artist'  Natural Language
                                     'tag_release'  Natural Language 0098
                                       'tag_title'  Rubber Hammer
                                             'bpm'  145.3
                                    'search_title'  'hammer':2 'rubber':1
                                   'search_artist'  'language':2 'natural':1
                                  'search_release'  'language':2 'natural':1
                                     'search_rest'  '00ambient':2 '00poprockelectronic':1 'ambient':11 'davies':6,7 'electronic':10 'emi':12 'emit':3 'hammer':9 'hywel':4,5 'rubber':8 't':13
                                    'search_combo'  '00ambient':8 '00poprockelectronic':7 'ambient':17 'davies':12,13 'electronic':16 'emi':18 'emit':9 'hammer':2A,15 'hywel':10,11 'language':4B,6C 'natural':3B,5C 'rubber':1A,14 't':19
                                    'tag_tracknum'  6
                                      'num_images'  0
                                             'key'  3B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-3', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-2', 'q-busy-1', 'q-drums-1', 'q-syn-3', 'q-chart-1', 'q-other-4', 'Q-HAP-3', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['minimalism', 'jazz', 'avant garde', 'experimental', 'ambient']
                                        'tag_date'  1998
                                     'discogstags'  ['abstract', 'acid jazz', 'electronic', 'ambient']

============================== file details ==============================
                                           'mtime'  1639508615.1286955  (2021-12-14 20:03:35)
                             'size'  8477980