======================== unified (from filesystem) ========================
                                         'bitrate'  '99.67'
                                        'duration'  '175'
                                          'artist'  'Captain Beefheart'
                                     'text_people'  ''
                                         'release'  'Dimitri - PopTropic'
                                           'title'  'My Head Is My Only House Unless It Rains'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-LOCALNESS-1', 'Q-UNU-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-2', 'Q-SYN-2', 'Q-BUSY-3', 'Q-GRIT-2', 'Q-PLAY-3', 'q-bass-3', "
 "'Q-CHART-2', 'q-drums-3', 'q-other-3', 'q-piano-1', 'q-vocals-3', "
 "'Q-MIXBEAT-2']")
                                      'lastfmtags'  "['experimental', 'avant-garde', 'psychedelic', 'blues', 'psychedelic rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  ''
                                        'comments'  ''
                                           'genre'  'rock-cppex-psychedelic'
                                             'bpm'  '113.3'
                                             'key'  '11A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Dimitri - PopTropic'
'TBPM' (BPM (beats per minute))                     '113.3'
'TCON' (Content type, a.k.a. Genre)                 'rock-cppex-psychedelic'
'TIT2' (Title/songname/content description)         'My Head Is My Only House Unless It Rains'
'TKEY' (Initial key)                                '11A'
'TPE1' (Lead performer(s)/Soloist(s))               'Captain Beefheart'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TSSE' (Software/Hardware and settings used for encoding)  'Lavf58.45.100'
'TXXX:Q-BUSY'                                       '3'
'TXXX:Q-CHART'                                      '2'
'TXXX:Q-GRIT'                                       '2'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-MIXBEAT'                                    '2'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-PLAY'                                       '3'
'TXXX:Q-SYN'                                        '2'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['experimental', 'avant-garde', 'psychedelic', 'blues', 'psychedelic rock']
'TXXX:q-bass'                                       '3'
'TXXX:q-drums'                                      '3'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '+1.13 dB'
'TXXX:replaygain_track_peak'                        '0.699639'
'TXXX:youtube'                                      'XJ2kSmbxEUw'

========================== row from database ==========================
                                              'id'  1477517
                                            'path'  /data/Music/Bulk/00exnnpjpsprgttidm/Dimitri/PopTropic/Captain Beefheart - My Head Is My Only House Unless It Rains-XJ2kSmbxEUw.mp3
                                         'working'  None
                                         'bitrate'  99
                                    'duration_sec'  175
                                           'genre'  rock-cppex-psychedelic
                                        'filesize'  2192813
                                           'mtime'  1620735979
                                   'redo_metaread'  0
                                        'rest_str'   00exnnpjpsprgttidm XJ2kSmbxEUw rock cppex psychedelic
                                      'tag_artist'  Captain Beefheart
                                     'tag_release'  Dimitri - PopTropic
                                       'tag_title'  My Head Is My Only House Unless It Rains
                                             'bpm'  113.3
                                    'search_title'  'head':2 'house':5 'is':3 'it':7 'my':1 'only':4 'rains':8 'unless':6
                                   'search_artist'  'beefheart':2 'captain':1
                                  'search_release'  'dimitri':1 'pop':3 'poptropic':2 'tropic':4
                                     'search_rest'  'cppex':3 'euw':7 'psychedelic':4 'rock':2 'smbx':6 'xj2k':5 'xj2ksmbxeuw':1
                                    'search_combo'  'beefheart':10B 'captain':9B 'cppex':17 'dimitri':11C 'euw':21 'head':2A 'house':5A 'is':3A 'it':7A 'my':1A 'only':4A 'pop':13C 'poptropic':12C 'psychedelic':18 'rains':8A 'rock':16 'smbx':20 'tropic':14C 'unless':6A 'xj2k':19 'xj2ksmbxeuw':15
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  11A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-1', 'q-piano-1', 'Q-MIXBEAT-2', 'Q-OLDST-2', 'Q-GRIT-2', 'Q-UNU-1', 'Q-JZFKS-1', 'Q-CHART-2', 'q-drums-3', 'Q-SYN-2', 'q-other-3', 'Q-BUSY-3', 'Q-HAP-3', 'Q-PLAY-3', 'q-bass-3']
                                      'lastfmtags'  ['experimental', 'avant-garde', 'psychedelic', 'blues', 'psychedelic rock']
                                        'tag_date'  
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620735979.1491692  (2021-05-11 14:26:19)
                             'size'  2192813