Craig Sjodin/Disney General Entertainment Content via Gett Grey's Anatomyhas named every one of its episodes, except for one, after a song Some fans are only just discovering these musical Easter eggs after 21 seasons One wrote, "Omg how have I not known this till now" Little did many fans know,Grey's Anatomyhas taken viewers on a musical journey across 21 seasons. The long-running medical drama series, which premiered in 2005, has named every one of its episodes — save for one — after a song, beginning with the pilot, titled "A Hard Day's Night" after the 1964 Beatles classic. One superfan even curated aSpotify playlistfeaturing the songs used in the titles. But some viewers are just finding out about the hidden Easter eggs after all these years. "Did you know that every singleGrey's Anatomyepisode is linked to a song?" one person wrote on social media, prompting another to reply, "Oh interesting. I didn't realize." Another commented: "Omg how have I not known this till now." Richard Cartwright/Disney General Entertainment Content via Getty The show's episode titles have spanned many popular musical eras, from the '50s (The Platters' "The Great Pretender") and the '80s (Cyndi Lauper's "True Colors") to more recent hits such asDua Lipa's "Hotter Than Hell" andHarry Styles'"Sign of the Times." The latest episode, which aired on Thursday, May 8, was titled "Love You Like a Love Song" (bySelena Gomezand The Scene). The onlyGrey's Anatomyepisode that was not named after a song is season 14's "1-800-799-7233," which is the U.S. domestic abuse hotline. In the episode, character Jo Wilson (Camilla Luddington) is forced to face her abusive ex-husband when he unexpectedly shows up at the hospital. Never miss a story — sign up forPEOPLE's free daily newsletterto stay up-to-date on the best of what PEOPLE has to offer, from celebrity news to compelling human interest stories. Grey's Anatomyhas famously celebrated music in other ways, too. One of the show's most memorable — and divisive — episodes, season 7's "Song Beneath the Song," saw the cast of surgeons singing their way through their scenes å la a Broadway musical. But at the time, some fans found the singing jarring against the emotional and traumatic storyline unfolding. A pregnant Callie Torres (Sara Ramírez) and wife Arizona Robbins (Jessica Capshaw) were involved in a serious car collision, just moments after getting married. Karen Neal/Disney General Entertainment Content via Getty The show also has a habit of using certain songs to foreshadow particularly tragic moments. For instance, when viewers hear the often-played tracks "How to Save a Life" (The Fray) and "Chasing Cars" (Snow Patrol), it's probably time to pull out the tissues. Back in 2017, show creatorShonda Rhimesspoke toBillboardabout the show's musical choices. Asked when she knows a song is perfect for a particular scene, she said, "If you can just drop a song over a scene without doing anything to it and it feels right, you're there." The TV mogul, 55, also touched on the power of music in amplifying the emotion of a story. "I always feel like when someone can't tell you what their show is supposed to sound like musically, they're in trouble because that's the other piece of storytelling to me," she told the outlet. Grey's Anatomyairs on ABC. Read the original article onPeople