Adam Lambertis giving fans a look into his future.

In the new music video for his glam rock cover ofBillie Eilish’s “Getting Older” premiering exclusively on PEOPLE, the singer, 41, uses makeup and prosthetics to transform into an older version of himself, wrinkles and gray hair included.

“I’ve always wanted to do a complete transformation with makeup,” Lambert tells PEOPLE. “Although it took nearly four hours, the end result was so lifelike, it was worth it!”

Adam Lambert.courtesy adam lambert

Watch Adam Lambert Completely ‘Transform’ Into an Older Version of Himself in ‘Getting Older’ Music Video

“I mean, no matter how old you are, we all feel the things that the lyrics describe,” he said. “[Singing it] felt very confessional.”

Adam Lambert.Adam Lambert.Adam Lambert.Adam Lambert.PHOTO: courtesy adam lambertAdam Lambert.PHOTO: courtesy adam lambertAdam Lambert.PHOTO: courtesy adam lambert

Adam Lambert.Adam Lambert.Adam Lambert.

Adam Lambert.

Watch Adam Lambert Completely ‘Transform’ Into an Older Version of Himself in ‘Getting Older’ Music Video

Watch Adam Lambert Completely ‘Transform’ Into an Older Version of Himself in ‘Getting Older’ Music Video

Watch Adam Lambert Completely ‘Transform’ Into an Older Version of Himself in ‘Getting Older’ Music Video

Adam Lambert.PHOTO: courtesy adam lambertAdam Lambert.PHOTO: courtesy adam lambertAdam Lambert.PHOTO: courtesy adam lambert

Discussing the line “things I once enjoyed / just keep me employed now,” Lambert said that sentiment is “definitely” something he’s felt before.

“I think it’s an interesting idea, because it reminds you that you have to continue to search for the joy in what you do,” he said. “Don’t lose sight of that spark, or else you’re on the wrong track, I think.”

Watch Adam Lambert Completely ‘Transform’ Into an Older Version of Himself in ‘Getting Older’ Music Video

“I thought to myself, ‘I’m fully aware I’m not the same size I was five years ago. Thanks for reminding me,'” he said. “I mean, I’m 41. I’m not 20 anymore! Also, you never know what someone’s life looks like behind closed doors or what factors have led to changes in people’s bodies — so keep [the criticism] to yourself.”

source: people.com