======================== unified (from filesystem) ========================
                                         'bitrate'  '248.153'
                                        'duration'  '257'
                                          'artist'  'Beats Antique'
                                     'text_people'  ''
                                         'release'  'Elektrafone'
                                           'title'  'Alto'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-HHRNBTT-1', 'Q-UNU-3', 'Q-OLDST-1', "
 "'Q-LOCALNESS-4', '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-1', "
 "'q-mixbeat-2']")
                                      'lastfmtags'  "['world', 'electronic', 'tribal fusion', 'belly dance', 'ambient']"
                                     'discogstags'  "['electronic']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '3'
                                      'tracktotal'  '10'
                                            'date'  '2011'
                                        'comments'  ''
                                           'genre'  'loc-m'
                                             'bpm'  '139.851'
                                             'key'  '7A'
                                        'acoustid'  ''
rest: ''

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

'APIC:cover'                                        type PictureType.COVER_FRONT (Cover (front)) b'cover'
                                     
'TALB' (Album/Movie/Show title)                     'Elektrafone'
'TBPM' (BPM (beats per minute))                     '139.851'
'TCMP'                                              '1'
'TCON' (Content type, a.k.a. Genre)                 'loc-m'
'TDRC' (Recording time)                             '2011-10-04'
'TIT2' (Title/songname/content description)         'Alto'
'TKEY' (Initial key)                                '7A'
'TMED' (Media type)                                 'CD'
'TPE1' (Lead performer(s)/Soloist(s))               'Beats Antique'
'TPE2' (Band/orchestra/accompaniment)               'Beats Antique'
'TPOS' (Part of a set)                              '1/1'
'TPUB' (Publisher)                                  'Antique Records'
'TRCK' (Track number/Position in set)               '3/10'
'TSOP' (Performer sort order)                       'Beats Antique'
'TSRC' (ISRC (international standard recording code))  'USQY51141206'
'TXXX:ALBUMARTISTSORT'                              'Beats Antique'
'TXXX:BARCODE'                                      '794504095111'
'TXXX:MusicBrainz Album Artist Id'                  '5eb38f71-96c3-48a3-9b69-2995cfb74982'
'TXXX:MusicBrainz Album Id'                         '5d3cf0eb-b4e1-48ac-8712-ac52aa7e7a88'
'TXXX:MusicBrainz Album Release Country'            'US'
'TXXX:MusicBrainz Album Status'                     'official'
'TXXX:MusicBrainz Album Type'                       'album'
'TXXX:MusicBrainz Artist Id'                        '5eb38f71-96c3-48a3-9b69-2995cfb74982'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '4'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '3'
'TXXX:SCRIPT'                                       'Latn'
'TXXX:discogstags'                                  'electronic'
'TXXX:lastfmtags'                                   ['world', 'electronic', 'tribal fusion', 'belly dance', 'ambient']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '2'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '-1.87 dB'
'TXXX:replaygain_track_peak'                        '0.617910'

========================== row from database ==========================
                                              'id'  1422303
                                            'path'  /data/Music/Bulk/00poprockelectronic/[LM]beats antique - ELEKTRAFONE/beats antique - ELEKTRAFONE - 03 Alto.mp3
                                         'working'  None
                                         'bitrate'  248
                                    'duration_sec'  257
                                           'genre'  loc-m
                                        'filesize'  8395482
                                           'mtime'  1620527800
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic [LM]beats antique ELEKTRAFONE beats antique ELEKTRAFONE 03 loc m
                                      'tag_artist'  Beats Antique
                                     'tag_release'  Elektrafone
                                       'tag_title'  Alto
                                             'bpm'  139.851
                                    'search_title'  'alto':1
                                   'search_artist'  'antique':2 'beats':1
                                  'search_release'  'elektrafone':1
                                     'search_rest'  '00poprockelectronic':1 'antique':5 'beats':3,7 'elektrafone':6 'lm':2 'lmbeats':4 'loc':8 'm':9
                                    'search_combo'  '00poprockelectronic':5 'alto':1A 'antique':3B,9 'beats':2B,7,11 'elektrafone':4C,10 'lm':6 'lmbeats':8 'loc':12 'm':13
                                    'tag_tracknum'  3
                                      'num_images'  1
                                             'key'  7A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-4', 'q-piano-1', 'q-mixbeat-2', 'q-play-2', 'Q-OLDST-1', 'Q-UNU-3', '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'  ['world', 'electronic', 'tribal fusion', 'belly dance', 'ambient']
                                        'tag_date'  2011
                                     'discogstags'  ['electronic']

============================== file details ==============================
                                           'mtime'  1620527799.5024457  (2021-05-09 04:36:39)
                             'size'  8395482