For some people, music is a huge part of training. Music has a variety of genres and subgenres, different moods and sounds, and all sorts of topics and themes.

Music isn't an objective thing. It's not something that can be ranked with numbers, statistics, and hard data. One person might say one band is better than the other, but another might say otherwise.

Rather than choose the top 10 musicians of all time and call it good, the Rock & Roll Hall of Fame inducts a "class" of seven musicians and/or bands into its lofted halls each year. Each class member is recognized for having at least 25 years of musical excellence under their belts.

Drumroll, please.

Without any further ado, here's the class of 2019:

The Cure

The Cure has been around for a little over 40 years, and their last album came out in 2008. Not a bad run at all, especially with hits like "Pictures of You," "Just Like Heaven," and the often-played "Friday I'm In Love."

Def Leppard

Def Leppard had the greatest success in the '80s, but that hasn't stopped them from continuing to rock on for 41 years. A few Def Leppard classics that are always good to work out to: "Pour Some Sugar On Me," "Armaggedon It," and "Animal."

Janet Jackson

As the youngest member of the Jackson family, Janet Jackson had a lot of pressure and a lot going for her. She boldly defined herself from the start: "My first name ain't baby, it's Janet / Miss Jackson if you're nasty." Though she's not so much of a rocker as someone who bridged the gap between R&B and pop, she's still worth listening to, Try "Nasty," "Miss you Much," and "Control."

Radiohead

Compared to the rest of this bunch, Radiohead seems relatively young. They banded together in 1985 and took the world by force with their 1992 song "Creep." Listen to: "Creep," "Paranoid Android," and "Plastic Trees."

Roxy Music

Roxy Music, established in 1970, had the glam rock aesthetic and the influence of early English punk music. They've been in an off-and-on relationship over the past decade. Listen to: "Avalon," "Re-make/Re-Model," and "Virginia Plain."

Stevie Nicks

Stevie Nicks is the first woman to be inducted into the Rock & Roll Hall of Fame twice. The first time was with her bandmates in Fleetwood Mac. Her voice is powerful, raw, and emotional. Listen to: "Edge of Seventeen," "Landslide," and "Stop Draggin' My Heart Around."

The Zombies

Man, and you thought Def Leppard and The Cure have been around forever? Try being The Zombies, who formed in 1961. They've been waiting a very long time for this moment, and finally, it's here. Listen to "Summertime," "She's Not There", and "Time of the Season."