Look, here's my theory

I think most people agree that (1) Boy With The Blues is not as good as it has been hyped and (2) that the chorus is outta place (e.g., I prefer this version - , respect to the guy who did the mix)

Recently, the Sun wrote:

"He (Noel) told the NME: “He’s really good. The thing about Liam is you haven’t heard the half of it. “If he could even be bothered to finish some of the songs he started. “Honestly, they’re amazing. But he suffers the curse of the Gallaghers. It’s like: ‘F*****g hell, can’t finish it.’ “I’ve got demos of his at home with about 40 tunes which, if he could be bothered, would be amazing.” "

www.thesun.co.uk/sol/homepage/showbiz/bizarre/article1529954.ece

In my opinion, BWTB is exactly one of "these" songs

In January 2006, NME reported:

"Oasis have revealed plans to release an EP in the summer. The lead track is likely to be the Liam-penned ‘The Boy With The Blues’. “Liam’s got this tune that’s left over from the sessions called ’The Boy With The Blues’, which he got in a right fucking arse about and it could’ve been on the record,” Noel told NME.COM.” And I would like to – because we’ve got a month off in January, we’ve GOT ALL of January off- I’d like to go back into the studio to add a bit more to it.” He added: “I’d like to put it out as a one-off single, ‘cos if we spend January recording and mixing it, it could be out for the summer.” Noel described the track as “catchy as fuck” and “a bit like Spiritualized.” The guitarist went on to say: “There’s not much of a chorus to speak of, which is why it didn’t go on the album. [Producer] Dave Sardy was like, ‘It needs a chorus,’ but it's got this change at the end where the words go: ‘Come all together/If we come all together/We’ll come all together for you’. However, Noel admitted he hadn’t spoken to Liam about going back into the studio. “I haven’t spoken to Liam about this. This’ll be the first he hears of it when he reads it now and he’ll be like, ‘What the fuck are you on about?’. I’d like to put it out as a one-off single, ‘cos if we spend January recording and mixing it, it could be out for the summer.”"

www.nme.com/news/oasis/21861

So, they were in need of a great chorus. And they didn't find it so they cancelled the release of the song and the EP:

"Oasis have decided to pull the release of their forthcoming EP in the summer. Speaking to Russell Brand on 6 Music, Noel Gallagher revealed that the band have shelved songs slated to appear on the mini-album because they weren't up to scratch. He also said that Oasis are taking a break for the rest of 2006 after recently completing their world tour. Noel added: "We had a couple of tracks left over from the last record and in our own heads we thought they were good enough to be released as an EP. "We went back and listened to the tapes and we reckon we can get it better, so we're having the year off instead." As previously reported on NME.COM the lead track on the EP was expected to be the Liam-penned 'The Boy With The Blues'. But it's now unlikely to appear on any future Oasis release until at least 2008, when the band are due to make their return."

www.nme.com/news/oasis/23073

Eventually, they've made a new chorus but it still wasn't good enough for a record, but having decided not to leave this track at all, they've put it on DOYS bonus CD

The result is ok, but not mind-blowing as it could've been (as compared to, say, I'm Outta Time) if only they could bother to finish the song properly

Sad - even that Youtube mix is better, in my opinion (you may as well have a different one, that's just my theory based on analysis of the Gallaghers' statements)