======================== unified (from filesystem) ========================
                                         'bitrate'  '215.589'
                                        'duration'  '129'
                                          'artist'  'Soft Machine'
                                     'text_people'  ''
                                         'release'  'Volumes One & Two'
                                           'title'  'Pig'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-UNU-1', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-2', 'Q-PLAY-3', 'q-syn-2', 'q-bass-3', 'q-busy-3', 'q-grit-2', "
 "'Q-PIANO-2', 'q-chart-3', 'q-drums-3', 'q-other-2', 'q-vocals-3', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['experimental', 'jazz', 'progressive rock', 'canterbury', 'psychedelic']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '27'
                                      'tracktotal'  '30'
                                            'date'  '1989'
                                        'comments'  ''
                                           'genre'  'rock-cppex-psychedelic'
                                             'bpm'  '145.371'
                                             'key'  '10A'
                                        'acoustid'  '521865df-49f8-4d17-b11a-5deca8763a52'
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Volumes One & Two'
'TBPM' (BPM (beats per minute))                     '145.371'
'TCON' (Content type, a.k.a. Genre)                 'rock-cppex-psychedelic'
'TDOR' (Original release time)                      '1989'
'TDRC' (Recording time)                             '1989'
'TIT2' (Title/songname/content description)         'Pig'
'TKEY' (Initial key)                                '10A'
'TMED' (Media type)                                 'CD'
'TPE1' (Lead performer(s)/Soloist(s))               'Soft Machine'
'TPE2' (Band/orchestra/accompaniment)               'Soft Machine'
'TPOS' (Part of a set)                              '1/1'
'TPUB' (Publisher)                                  'Big Beat'
'TRCK' (Track number/Position in set)               '27/30'
'TSO2'                                              'Soft Machine'
'TSOP' (Performer sort order)                       'Soft Machine'
'TXXX:ASIN'                                         'B0000004F9'
'TXXX:Acoustid Id'                                  '521865df-49f8-4d17-b11a-5deca8763a52'
'TXXX:BARCODE'                                      '029667492027'
'TXXX:CATALOGNUMBER'                                'CDWIKD 920'
'TXXX:MusicBrainz Album Artist Id'                  '5193ce6b-a315-4c50-ae49-54e69ffbc988'
'TXXX:MusicBrainz Album Id'                         'e8f9bf43-d48e-4140-8f37-3f96729b07ae'
'TXXX:MusicBrainz Album Release Country'            'GB'
'TXXX:MusicBrainz Album Status'                     'official'
'TXXX:MusicBrainz Album Type'                       'compilation'
'TXXX:MusicBrainz Artist Id'                        '5193ce6b-a315-4c50-ae49-54e69ffbc988'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-PIANO'                                      '2'
'TXXX:Q-PLAY'                                       '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:SCRIPT'                                       'Latn'
'TXXX:lastfmtags'                                   ['experimental', 'jazz', 'progressive rock', 'canterbury', 'psychedelic']
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '3'
'TXXX:q-drums'                                      '3'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '2'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '-0.60 dB'
'TXXX:replaygain_track_peak'                        '0.578584'
'UFID:http://musicbrainz.org'                       UFID(owner='http://musicbrainz.org', data=b'1419a90e-a903-4543-9328-e51809a821d0')

========================== row from database ==========================
                                              'id'  1410841
                                            'path'  /data/Music/Bulk/00popandrock-classicprogpsy/Soft Machine/1969 - Volume II/14 - Pig.mp3
                                         'working'  None
                                         'bitrate'  215
                                    'duration_sec'  129
                                           'genre'  rock-cppex-psychedelic
                                        'filesize'  3492682
                                           'mtime'  1620736952
                                   'redo_metaread'  0
                                        'rest_str'   00popandrock classicprogpsy 1969 II 14 rock cppex psychedelic
                                      'tag_artist'  Soft Machine
                                     'tag_release'  Volumes One & Two
                                       'tag_title'  Pig
                                             'bpm'  145.371
                                    'search_title'  'pig':1
                                   'search_artist'  'machine':2 'soft':1
                                  'search_release'  'one':2 'two':3 'volumes':1
                                     'search_rest'  '1969':2 'classicprogpsy':1 'cppex':5 'ii':3 'psychedelic':6 'rock':4
                                    'search_combo'  '1969':8 'classicprogpsy':7 'cppex':11 'ii':9 'machine':3B 'one':5C 'pig':1A 'psychedelic':12 'rock':10 'soft':2B 'two':6C 'volumes':4C
                                    'tag_tracknum'  27
                                      'num_images'  0
                                             'key'  10A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-1', 'q-mixbeat-1', 'Q-PIANO-2', 'Q-OLDST-2', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-3', 'q-syn-2', 'q-chart-3', 'q-other-2', 'Q-HAP-3', 'Q-PLAY-3', 'q-bass-3', 'q-grit-2']
                                      'lastfmtags'  ['experimental', 'jazz', 'progressive rock', 'canterbury', 'psychedelic']
                                        'tag_date'  1989
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620736951.5173643  (2021-05-11 14:42:31)
                             'size'  3492682