Nick Jonas "constantly reminisces" about his time in the Jonas Brothers.

Nick Jonas

Nick Jonas

The 23-year-old singer teamed up with his older brothers Joe and Kevin for eight years and admits it was "some of the best years of my life".

He said: "With the brother stuff, I constantly go back and reminisce about the music that we released together and touring and you know it was some of the best years of my life. So you know, thinking back to some of those records that we released and got to play was really fun."

The 'Chains' hitmaker - who is gearing up to release his third studio album, 'Last Year Was Complicated' - really enjoyed penning tracks as part of the group and admits 'A Little Bit Longer' is one of his favourites to date.

Speaking of the song, which he wrote about his battle with Type 1 Diabetes, he added in a Reddit AMA: "I think 'A Little Bit Longer' is still up there on my list of songs that are closest to me, but as time's gone on you know in my solo stuff there's more, and there's more on this new record that I'm really looking forward to people hearing. One in particular called 'Chainsaw' and a song called 'Unhinged.'"