I thought that it was Algeria, but didn't want to go in on them since I wasn't sure One of the weirdest submissions.
It's very unlikely that I score 6 minute songs well, because those that go 6, 7 minutes and more are usually bad in the very first 30 seconds and you can't expect me to listen through the whole thing and do it 5-7 more times until I decide what points it could get. It makes me think that those artists were surrounded by 'yes men' that wouldn't warn them that the song isn't very good, yet they made a 7 minute version from it, when it could've been less painful as three, or not released at all
The only way I see 6 minute songs doing really well, it's what's somewhat prominent in the music industry as the album closing track, which usually have a lot of different motives to not get boring, long intros-outros, build-up and very keen on instrumental parts, it's always interchanging to introduce the listener with something new every 15-20 seconds.
Some of the best examples that come to mind right now would be Harry Styles "Fine Line", All The Luck In The World "Abhainn", Adele's "Love Is A Game", "Goodnight, Travel Well" by The Killers.
It's mostly used as a treat for fans and for artistic expression, but it's at the end of the album, to not disrupt the flow of the album and to weed out the people that don't like you enough to get through a 6-7 minute song from you. If it's your very first time listening/being introduced to an artist, the last thing you want to hear is a 7 minute rendition and it's not the type of song that helps you discover an artist, because no radio, nor playlist will ever pick it up.
It's not an album ending track surprisingly, but I'll also use this opportunity to shout-out "Spanish Sahara" by The Foals. Brilliant way to use 6+ minutes, not only the lyrics, but the music tells a story as well. Not surprised it blew up after getting picked up as soundtrack for "Life Is Strange".