======================== unified (from filesystem) ========================
                                         'bitrate'  '256.0'
                                        'duration'  '221'
                                          'artist'  'Motörhead'
                                     'text_people'  ''
                                         'release'  'Stone Deaf Forever!'
                                           'title'  'Step Down'
                                           'quals'  ("['Q-HAP-2', 'Q-UNU-2', 'Q-OLDST-3', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', "
 "'Q-JZFKS-1', 'q-syn-2', 'q-bass-3', 'q-busy-3', 'q-grit-2', 'q-play-3', "
 "'q-chart-4', 'q-drums-3', 'q-other-4', 'q-piano-1', 'q-vocals-1', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['speed metal', 'hard rock', 'metal', 'rock', 'heavy metal']"
                                     'discogstags'  "['rock', 'heavy metal', 'hard rock', 'punk', 'rock & roll']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '19'
                                      'tracktotal'  '22'
                                            'date'  '2003'
                                        'comments'  ''
                                           'genre'  'rock-gr-hard'
                                             'bpm'  '124'
                                             'key'  '5B'
                                        'acoustid'  '84f2e49a-9432-424e-b5fb-9c816200f0fd'
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'TALB' (Album/Movie/Show title)                     'Stone Deaf Forever!'
'TBPM' (BPM (beats per minute))                     '124'
'TCON' (Content type, a.k.a. Genre)                 'rock-gr-hard'
'TDOR' (Original release time)                      '2003'
'TDRC' (Recording time)                             '2003'
'TIT2' (Title/songname/content description)         'Step Down'
'TKEY' (Initial key)                                '5B'
'TMED' (Media type)                                 'CD'
'TPE1' (Lead performer(s)/Soloist(s))               'Motörhead'
'TPE2' (Band/orchestra/accompaniment)               'Motörhead'
'TPOS' (Part of a set)                              '1/5'
'TPUB' (Publisher)                                  'Castle Music'
'TRCK' (Track number/Position in set)               '19/22'
'TSO2'                                              'Motörhead'
'TSOP' (Performer sort order)                       'Motörhead'
'TSRC' (ISRC (international standard recording code))  'GBAJE7900327'
'TSST' (Set subtitle)                               '1975-1980'
'TXXX:Acoustid Id'                                  '84f2e49a-9432-424e-b5fb-9c816200f0fd'
'TXXX:Artists'                                      'Motörhead'
'TXXX:BARCODE'                                      '5050159174799'
'TXXX:CATALOGNUMBER'                                'CMXBX747'
'TXXX:MusicBrainz Album Artist Id'                  '57961a97-3796-4bf7-9f02-a985a8979ae9'
'TXXX:MusicBrainz Album Id'                         '930e2c0f-bef2-4c7e-a459-8b44e93c8413'
'TXXX:MusicBrainz Album Release Country'            'XE'
'TXXX:MusicBrainz Album Status'                     'official'
'TXXX:MusicBrainz Album Type'                       'album/compilation'
'TXXX:MusicBrainz Artist Id'                        '57961a97-3796-4bf7-9f02-a985a8979ae9'
'TXXX:MusicBrainz Release Group Id'                 '23922049-8179-3f3d-95c6-f999023813f3'
'TXXX:MusicBrainz Release Track Id'                 'af4d516c-18b8-43c3-9412-9e6a1d92126c'
'TXXX:Q-HAP'                                        '2'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '2'
'TXXX:SCRIPT'                                       'Latn'
'TXXX:discogstags'                                  ['rock', 'heavy metal', 'hard rock', 'punk', 'rock & roll']
'TXXX:lastfmtags'                                   ['speed metal', 'hard rock', 'metal', 'rock', 'heavy metal']
'TXXX:originalyear'                                 '2003'
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '4'
'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'                        '+0.53 dB'
'TXXX:replaygain_track_peak'                        '0.497290'
'UFID:http://musicbrainz.org'                       UFID(owner='http://musicbrainz.org', data=b'ea722068-a01c-4f65-b75f-045faaf88f8e')

========================== row from database ==========================
                                              'id'  934464
                                            'path'  /data/Music/Bulk/00dwimp/Motorhead/Motorhead - CD1  1975-1980/19 - Step Down.mp3
                                         'working'  None
                                         'bitrate'  256
                                    'duration_sec'  221
                                           'genre'  rock-gr-hard
                                        'filesize'  7153055
                                           'mtime'  1636902813
                                   'redo_metaread'  0
                                        'rest_str'   00dwimp Motorhead Motorhead CD1 1975 1980 19 rock gr hard
                                      'tag_artist'  Motörhead
                                     'tag_release'  Stone Deaf Forever!
                                       'tag_title'  Step Down
                                             'bpm'  124.0
                                    'search_title'  'down':2 'step':1
                                   'search_artist'  'motorhead':1,2
                                  'search_release'  'deaf':2 'forever':3 'stone':1
                                     'search_rest'  '00dwimp':1 '19':6 '1975':4 '1980':5 'cd1':3 'gr':8 'hard':9 'motorhead':2 'rock':7
                                    'search_combo'  '00dwimp':8 '19':13 '1975':11 '1980':12 'cd1':10 'deaf':6C 'down':2A 'forever':7C 'gr':15 'hard':16 'motorhead':3B,4B,9 'rock':14 'step':1A 'stone':5C
                                    'tag_tracknum'  19
                                      'num_images'  1
                                             'key'  5B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-3', 'Q-OLDST-3', 'Q-UNU-2', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-3', 'q-syn-2', 'q-chart-4', 'q-other-4', 'Q-HAP-2', 'q-bass-3', 'q-grit-2']
                                      'lastfmtags'  ['speed metal', 'hard rock', 'metal', 'rock', 'heavy metal']
                                        'tag_date'  2003
                                     'discogstags'  ['rock', 'heavy metal', 'hard rock', 'punk', 'rock & roll']

============================== file details ==============================
                                           'mtime'  1636902812.648048  (2021-11-14 16:13:32)
                             'size'  7153055