======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '172'
                                          'artist'  'Bo Carter'
                                     'text_people'  ''
                                         'release'  'Complete Recorded Works 2'
                                           'title'  'Pig Meat Is What I Crave'
                                           'quals'  ("['Q-HAP-3', 'Q-UNU-1', 'Q-JZFKS-2', 'Q-LOCALNESS-3', 'Q-HHRNBTT-1', "
 "'Q-OLDST-1', 'q-syn-1', 'q-bass-1', 'q-busy-3', 'q-grit-2', 'q-play-2', "
 "'q-chart-2', 'q-drums-1', 'q-other-3', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['country blues', 'blues', 'delta blues', 'folk']"
                                     'discogstags'  "['blues']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '03'
                                      'tracktotal'  ''
                                            'date'  '1931'
                                        'comments'  ''
                                           'genre'  'set-th-novelty'
                                             'bpm'  '115.589'
                                             'key'  '1A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Complete Recorded Works 2'
'TBPM' (BPM (beats per minute))                     '115.589'
'TCON' (Content type, a.k.a. Genre)                 'set-th-novelty'
'TDRC' (Recording time)                             '1931'
'TIT2' (Title/songname/content description)         'Pig Meat Is What I Crave'
'TKEY' (Initial key)                                '1A'
'TLEN' (Length)                                     '172852'
'TMED' (Media type)                                 'DIG'
'TPE1' (Lead performer(s)/Soloist(s))               'Bo Carter'
'TPE2' (Band/orchestra/accompaniment)               'Bo Carter'
'TRCK' (Track number/Position in set)               '03'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '2'
'TXXX:Q-LOCALNESS'                                  '3'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  'blues'
'TXXX:lastfmtags'                                   ['country blues', 'blues', 'delta blues', 'folk']
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+3.13 dB'
'TXXX:replaygain_track_peak'                        '0.528800'

========================== row from database ==========================
                                              'id'  760206
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/Zimelis [Chow, Baby!]/Bo Carter - Pig Meat Is What I Crave.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  172
                                           'genre'  set-th-novelty
                                        'filesize'  2769947
                                           'mtime'  1621628466
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country Zimelis [Chow, Baby!] set th novelty
                                      'tag_artist'  Bo Carter
                                     'tag_release'  Complete Recorded Works 2
                                       'tag_title'  Pig Meat Is What I Crave
                                             'bpm'  115.589
                                    'search_title'  'crave':6 'i':5 'is':3 'meat':2 'pig':1 'what':4
                                   'search_artist'  'bo':1 'carter':2
                                  'search_release'  '2':4 'complete':1 'recorded':2 'works':3
                                     'search_rest'  'baby':8,9 'chow':6,7 'country':4 'exotica':2 'jazz':1 'novelty':12 'oldies':3 'set':10 'th':11 'zimelis':5
                                    'search_combo'  '2':12C 'baby':20,21 'bo':7B 'carter':8B 'chow':18,19 'complete':9C 'country':16 'crave':6A 'exotica':14 'i':5A 'is':3A 'jazz':13 'meat':2A 'novelty':24 'oldies':15 'pig':1A 'recorded':10C 'set':22 'th':23 'what':4A 'works':11C 'zimelis':17
                                    'tag_tracknum'  3
                                      'num_images'  0
                                             'key'  1A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-3', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-1', 'Q-UNU-1', 'Q-JZFKS-2', 'q-busy-3', 'q-drums-1', 'q-syn-1', 'q-chart-2', 'q-other-3', 'Q-HAP-3', 'q-bass-1', 'q-grit-2']
                                      'lastfmtags'  ['country blues', 'blues', 'delta blues', 'folk']
                                        'tag_date'  1931
                                     'discogstags'  ['blues']

============================== file details ==============================
                                           'mtime'  1621628465.568139  (2021-05-21 22:21:05)
                             'size'  2769947