======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '396'
                                          'artist'  'Synth Sense'
                                     'text_people'  ''
                                         'release'  ''
                                           'title'  'Contact (FREE-DOWNLOAD) [Download link inside]'
                                           'quals'  ("['Q-MIXBEAT-3', 'Q-HAP-2', 'Q-UNU-1', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', "
 "'Q-JZFKS-1', 'Q-OLDST-3', 'q-syn-4', 'q-bass-4', 'q-busy-3', 'q-grit-2', "
 "'q-play-3', 'q-chart-1', 'q-drums-2', 'q-other-1', 'q-piano-1', "
 "'q-vocals-1']")
                                      'lastfmtags'  "['breakbeat', 'drum and bass', 'downtempo', 'experimental', 'ambient']"
                                     'discogstags'  "['electronic']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '2015'
                                        'comments'  ''
                                           'genre'  'electronic-th-techno-minimal or deephouse'
                                             'bpm'  '115.0'
                                             'key'  '9A'
                                        'acoustid'  ''
rest: ''

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

'TBPM' (BPM (beats per minute))                     '115.0'
'TCON' (Content type, a.k.a. Genre)                 'electronic-th-techno-minimal or deephouse'
'TDRC' (Recording time)                             '2015'
'TIT2' (Title/songname/content description)         'Contact (FREE-DOWNLOAD) [Download link inside]'
'TKEY' (Initial key)                                '9A'
'TPE1' (Lead performer(s)/Soloist(s))               'Synth Sense'
'TXXX:Q-HAP'                                        '2'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-MIXBEAT'                                    '3'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  'electronic'
'TXXX:lastfmtags'                                   ['breakbeat', 'drum and bass', 'downtempo', 'experimental', 'ambient']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '2'
'TXXX:q-grit'                                       '2'
'TXXX:q-other'                                      '1'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '4'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '-6.47 dB'
'TXXX:replaygain_track_peak'                        '1.350794'

========================== row from database ==========================
                                              'id'  856633
                                            'path'  /data/Music/Bulk/00exnnpjpsprgttidm/soundcloud/synth-sense/Synth Sense - Contact (FREE-DOWNLOAD) [Download link inside]-54942928.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  396
                                           'genre'  electronic-th-techno-minimal or deephouse
                                        'filesize'  6351845
                                           'mtime'  1621085009
                                   'redo_metaread'  0
                                        'rest_str'   00exnnpjpsprgttidm soundcloud synth sense 54942928 electronic techno minimal or deephouse
                                      'tag_artist'  Synth Sense
                                     'tag_release'  None
                                       'tag_title'  Contact (FREE-DOWNLOAD) [Download link inside]
                                             'bpm'  115.0
                                    'search_title'  'contact':1 'download':3,5,6 'free':2 'freedownload':4 'inside':8,9 'link':7
                                   'search_artist'  'sense':2 'synth':1
                                  'search_release'  
                                     'search_rest'  '54942928':4 'deephouse':9 'electronic':5 'minimal':7 'or':8 'sense':3 'soundcloud':1 'synth':2 'techno':6
                                    'search_combo'  '54942928':15 'contact':1A 'deephouse':20 'download':3A,5A,6A 'electronic':16 'free':2A 'freedownload':4A 'inside':8A,9A 'link':7A 'minimal':18 'or':19 'sense':11B,14 'soundcloud':12 'synth':10B,13 'techno':17
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  9A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-1', 'q-piano-1', 'Q-MIXBEAT-3', 'q-play-3', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-2', 'q-syn-4', 'q-chart-1', 'q-other-1', 'Q-HAP-2', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['breakbeat', 'drum and bass', 'downtempo', 'experimental', 'ambient']
                                        'tag_date'  2015
                                     'discogstags'  ['electronic']

============================== file details ==============================
                                           'mtime'  1621085009.1934953  (2021-05-15 15:23:29)
                             'size'  6351845