======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '336'
                                          'artist'  "Salt 'n' Pepa"
                                     'text_people'  ''
                                         'release'  'Cafi del Mar, volumen cinco'
                                           'title'  'Angels Landing (Jose Padilla & Sunchild remix)'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-UNU-1', 'Q-LOCALNESS-1', 'Q-HHRNBTT-3', "
 "'Q-OLDST-3', 'q-syn-2', 'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-2', "
 "'q-chart-2', 'q-drums-4', 'q-other-3', 'q-piano-1', 'q-vocals-2', "
 "'q-mixbeat-3']")
                                      'lastfmtags'  "['hip-hop', 'rap', '80s', 'female vocalists', 'hip hop']"
                                     'discogstags'  "['hip hop']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '13'
                                      'tracktotal'  '15'
                                            'date'  '1998'
                                        'comments'  ''
                                           'genre'  'hip hop or rnb or rap or turntablism'
                                             'bpm'  '110.062'
                                             'key'  '10A'
                                        'acoustid'  ''
rest: ''

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

'COMM:ID3v1 Comment:XXX'                            'Chillout; Summer; Romantic'
'COMM:Songs-DB_Custom1:eng'                         '1990s'
'COMM:Songs-DB_Custom2:eng'                         'Cafe Del Mar; Beautiful; Synth; Hypnotic'
'COMM:Songs-DB_Custom3:eng'                         'British; London'
'COMM:Songs-DB_Occasion:eng'                        'Chillout; Summer; Romantic'
'POPM:Windows Media Player 9 Series'                POPM(email='Windows Media Player 9 Series', rating=128, count=0)
'TALB' (Album/Movie/Show title)                     'Cafi del Mar, volumen cinco'
'TBPM' (BPM (beats per minute))                     '110.062'
'TCMP'                                              '1'
'TCON' (Content type, a.k.a. Genre)                 'hip hop or rnb or rap or turntablism'
'TDOR' (Original release time)                      '1998'
'TDRC' (Recording time)                             '1998'
'TIT2' (Title/songname/content description)         'Angels Landing (Jose Padilla & Sunchild remix)'
'TKEY' (Initial key)                                '10A'
'TPE1' (Lead performer(s)/Soloist(s))               "Salt 'n' Pepa"
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TPUB' (Publisher)                                  'Manifesto'
'TRCK' (Track number/Position in set)               '13/15'
'TSOP' (Performer sort order)                       'Salt Tank'
'TSRC' (ISRC (international standard recording code))  'GBAMY9800006'
'TXXX:ALBUMARTISTSORT'                              'Various Artists'
'TXXX:ASIN'                                         'B00000B98T'
'TXXX:BARCODE'                                      '731456522821'
'TXXX:CATALOGNUMBER'                                '565 228-2'
'TXXX:FMPS_Rating'                                  '0.6'
'TXXX:MP3GAIN_MINMAX'                               '000,196'
'TXXX:MusicBrainz Album Artist Id'                  '89ad4ac3-39f7-470e-963a-56509c546377'
'TXXX:MusicBrainz Album Id'                         'b8b2ac9c-22c3-4c22-bdbb-69ccfd55bf08'
'TXXX:MusicBrainz Album Release Country'            'GB'
'TXXX:MusicBrainz Album Status'                     'official'
'TXXX:MusicBrainz Album Type'                       'compilation'
'TXXX:MusicBrainz Artist Id'                        'af2e4bbe-e6b4-4e34-9930-d402c84f9b13'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '3'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  'hip hop'
'TXXX:lastfmtags'                                   ['hip-hop', 'rap', '80s', 'female vocalists', 'hip hop']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '3'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '2'
'TXXX:replaygain_track_gain'                        '+0.70 dB'
'TXXX:replaygain_track_peak'                        '0.656355'

========================== row from database ==========================
                                              'id'  1283514
                                            'path'  /data/Music/Bulk/00poprockelectronic/Unsorted/[loose files]/Salt Tank__cifsd0b.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  336
                                           'genre'  hip hop or rnb or rap or turntablism
                                        'filesize'  5390336
                                           'mtime'  1620572970
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic Unsorted [loose files] Tank__cifsd0b hip hop or rnb or rap or turntablism
                                      'tag_artist'  Salt 'n' Pepa
                                     'tag_release'  Cafi del Mar, volumen cinco
                                       'tag_title'  Angels Landing (Jose Padilla & Sunchild remix)
                                             'bpm'  110.062
                                    'search_title'  'angels':1 'jose':3,4 'landing':2 'padilla':5 'remix':7,8 'sunchild':6
                                   'search_artist'  'n':2,3 'pepa':4 'salt':1
                                  'search_release'  'cafi':1 'cinco':6 'del':2 'mar':3,4 'volumen':5
                                     'search_rest'  '00poprockelectronic':1 'cifsd0b':8 'files':5,6 'hip':9 'hop':10 'loose':3,4 'or':11 'rap':13 'rnb':12 'tank':7 'turntablism':14 'unsorted':2
                                    'search_combo'  '00poprockelectronic':19 'angels':1A 'cafi':13C 'cifsd0b':26 'cinco':18C 'del':14C 'files':23,24 'hip':27 'hop':28 'jose':3A,4A 'landing':2A 'loose':21,22 'mar':15C,16C 'n':10B,11B 'or':29 'padilla':5A 'pepa':12B 'rap':31 'remix':7A,8A 'rnb':30 'salt':9B 'sunchild':6A 'tank':25 'turntablism':32 'unsorted':20 'volumen':17C
                                    'tag_tracknum'  13
                                      'num_images'  0
                                             'key'  10A
                                           'quals'  ['Q-HHRNBTT-3', 'q-vocals-2', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-3', 'q-play-2', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-4', 'q-syn-2', 'q-chart-2', 'q-other-3', 'Q-HAP-3', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['hip-hop', 'rap', '80s', 'female vocalists', 'hip hop']
                                        'tag_date'  1998
                                     'discogstags'  ['hip hop']

============================== file details ==============================
                                           'mtime'  1620572970.0299528  (2021-05-09 17:09:30)
                             'size'  5390336