"I love this band with all my heart, and getting to see it grow from four kids in my parents' garage to what it is now has been incredible. I loved it all. But, at a certain point, I realised that I wasn't able to be there for the band the way I wanted to be, and more importantly, the way they needed me to be."

Spencer also mentions his past struggles with substance abuse, which saw him pull out of a tour in 2012, and thanks his former band mates for their support:

"When my addiction grabbed hold and wouldn't let go, they could have easily kicked me out and never looked back, but they didn't. Instead, they encouraged me to seek treatment and gave me the time I needed to get my life back in order. They helped me through those rough times, and now, on the other side, with two years sobriety from prescription medication, and working on a year sobriety from alcohol, I am nothing but grateful for all they have done."

Panic! At The Disco first got into the spotlights in 2005 with the single I Write Sins Not Tragedies, which reached number 7 on the Hot 100 chart. The extravagant video for the single won the MTV VMA for Video of the Year in 2006. The group's debut album, 'A Fever You Can't Sweat Out', has sold 1.98 million copies since it was released in 2006.