The Welsh six-piece embarked on a tour last year, only for vocalist Gareth Butler to become seriously ill on stage.
He suffered a hemiplegic migraine on stage - a condition that can present stroke-like symptoms.
This led to the band cancelling all the tour dates, including their date set for the Glasgow QMU.
This followed a delayed album release for latest record 'Start the Party', with the summer-themed album being released this month.
However, as the band embarks on their rescheduled UK tour, front man Sean Smith can look back with a chuckle at the event.
He said: "I noticed Gareth was slurring at parts of the song on stage, and as he looked at me I was just thinking, 'He can't be drunk off just one beer'. That's when I realised it was a lot more serious."
This particular date in Glasgow has also been met with some confusion, as some ticket sites appear to have refunded tickets, whereas the band's management says it has not been.
Among the confusion, the venue has also changed from the Garage to King Tut's. This has led to fans not knowing if their tickets are valid, or even where to go.
Sean Smith is also lost in the mess, but knows where he will be at the gig tonight.
He said: "We have a bit of a saying now, if it can go wrong, it will go wrong for The Blackout.
"There seems to be a bit of confusion about tickets, so either more people than the place can hold will turn up, or nobody will turn up.
"But, the band will be at Tut's, and if I know Scotland at all, it will be a total riot."
Apart from being known for gig troubles, The Blackout are known for their great live shows.
As well as a high energy performance, The Blackout's front man enjoys joking with the crowd between songs. He also expresses his love for the Glaswegian crowd.
Sean said: "When I go to a gig, I don't want to just see the band playing songs and then going silent, I want to see more, so that's what I try to do. I find myself funny at least.
"I cannot wait to play in Glasgow, we all love it, I don't know what it is about Scottish and Welsh people, but when they seem to mix, it's just insanity."
The mix of Scottish comedy is also something Sean appreciates, as he expresses his love for one of the country's most popular comedies and how he hopes to meet the man at King Tut's tonight.
He said: "I love Limmy's Show. Nobody outside of Scotland seems to watch it apart from me. I love comedy and he's hilarious.
"I'm actually planning on inviting him to the show tonight, but he never seems to respond to my Tweets."
After the turbulent 2013, the band are starting to get songs together for their next album, which the band Sean thinks will be a lot more explicit than the band's previous three albums.
He said: "We've written five or six songs now, most of them are really heavy. Most of the lyrics I've written so far have been swear words. There's not enough swearing in music.
"I predict 2014 will be the year of swearing."