Hanson think 'MMMBop' wasn't a "shabby way" to start their career.
The Oklahoma-based band - who had a worldwide hit with the pop song in 1997 - admitted they see their debut as a "pretty good first chapter" to their 15 years in the music industry.
Isaac - who is joined in the group by brothers Taylor and Zac - exclusively told BANG Showbiz: "Every book has a story, every book has a first chapter and for us that's a pretty good first chapter. It was not a shabby way to start things off."
The group explained they feel in a "lucky position" to have written a track so young that continued to be popular over the years.
Isaac added: "I think that we're in a really lucky position that as young as we were, a song like 'MMMBop' was so popular. And I have to say it kept getting bigger over the years.
"Songs and careers they kind of grow in a unique way over time. It's not just about what it was, it's about what it is, what it continues to be."