Be sure to explain why you edited the setlist. Don't explain what you've edited as this is obvious to the viewer. For example "added a song" is not a valid source. Examples for valid sources are (among others):
Links to official websites (e.g. artists posting their setlists on their websites) Links to social media channels (e.g. fans posting images of the setlist) Links to setlist scans Links to videos of the concert "I was there" - if you were at the concert and remember the song being played
Correcting title as a source for your edit isn't mandatory
https://www.setlist.fm/setlist/fat-freddys-drop/2018/ancienne-belgique-brussels-belgium-3396f03d.html#sfmses42d6472f
Everybody can see what you did
https://www.setlist.fm/guidelines#sources
It is mandatory to add sources to all of your edits. Not only can your edit be verified for other users, it can also avoid unnecessary discussions and save a lot of time.
Be sure to explain why you edited the setlist. Don't explain what you've edited as this is obvious to the viewer. For example "added a song" is not a valid source. Examples for valid sources are (among others):
Links to official websites (e.g. artists posting their setlists on their websites)
Links to social media channels (e.g. fans posting images of the setlist)
Links to setlist scans
Links to videos of the concert
"I was there" - if you were at the concert and remember the song being played
If someone guested during the song, please read
https://www.setlist.fm/guidelines#with-songs
https://www.setlist.fm/tutorial#with-songs