Brian May "doesn't understand" most modern music.
The Queen star is widely thought of as one of the most talented guitarists in the world. The type of rock music he is famed for isn't as popular as it once was, with dance and R&B tunes charting higher these days.
May can't fathom why tastes have changed so much.
"I was driving around in the car and I had [UK music station] Radio 1 on and basically I don't understand a lot... I think I'm too old to understand it," he laughed.
Queen are set to play a series of shows later this year. American Idol star Adam Lambert will front the performances.
Lambert took part in the eighth season of the TV singing contest, coming in second place behind Kris Allen. The show aired in 2009 and as soon as Brian saw Lambert he knew he wanted to work with him.
"It's very exciting, we are touring with a young man called Adam Lambert so it will be very different and new," he told BBC Radio 1.
"Adam has made a sensation really and has an incredible voice. I was instantly drawn to him, I tuned in and watched. We went over for the final, they were both great but Adam has this incredible range. Freddie would be pretty amazed."