Assorted ramblings from the world of entertainment:

・ The band Thursday headlines Packard Music Hall on Friday, but it will be part of a far bigger event later this year in Las Vegas.

Thursday is one of more than 60 acts booked for When We Were Young, which will serve up a massive helping of emo nostalgia on Oct. 22 at the Las Vegas Festival Grounds.

My Chemical Romance and Paramore are co-headliners, but the lineup also includes Bring Me the Horizon, Avril Lavigne, A Day to Remember, Bright Eyes, Jimmy Eat World, AFI, The Used, Taking Back Sunday, Dashboard Confessional and essentially every band formed between 1998 and 2008 that had a T-shirt available at Hot Topix.

I’m a little older than the demographic this show is targeted to, but the thing that seems insane is that When We Were Young is only a one-day event. Most three-day festivals feature fewer acts than this lineup boasts.

That means one of two things — most acts will be playing incredibly short sets or there will be so many stages featuring music simultaneously that it will be impossible to enjoy even a small fraction of the bands on the bill. The information on the website (www.whenwewereyoungfestival.com) indicates there are only three stages and 13 hours of music (11 a.m. to midnight), so short sets must be the plan.

Tickets start at $224.99, and the festival presale starts Friday.

Tickets for Thursday at Packard Music Hall (with Cursive, The Appleseed Cast and Nate Bergman) opening are $35 and $29. I feel safe in guaranteeing that Thursday will play a longer show in Warren than it will get to play in Vegas in October.

・ Millennial Theatre Company announced its next production in the program for its current show, “Heathers the Musical,” at Hopewell Theatre in Youngstown.

MTC will stay in high school by staging “Grease” at the Youngstown Playhouse for a two-weekend run starting July 29.

During an interview for the “Heathers” preview, MTC founder Joe Asente joked that the theater’s core members may be approaching the end of their days playing high school characters. But anyone not currently collecting Social Security will be younger than some of the actors who’ve played teens in that musical, whether it’s the 1978 film version or the many (many, many) local productions over the years.

After an adventurous choice like “Heathers” — which is great, go see one of the final three performances this weekend — it’s hard to get too excited about this overdone title.

Audition details will be announced at a later date.

・ The cable channel Reelz will premiere a documentary next month about the 2003 fire at the Station nightclub in West Warwick, R.I., that killed 100 people, including Ty Longley, a Brookfield High School graduate and Sharon, Pa., native who was playing guitar for the band Great White.

“America’s Deadliest Rock Concert: The Guest List” looks at the concert tragedy that occurred moments after Great White came on stage. Its pyrotechnics ignited a fire that raced up the walls of the club and across the ceiling. Many died in the fire or the mad rush as 400 people tried to escape the blaze.

According to a press release, the documentary includes interviews with survivors, first responders and family members of those who died.

Longley graduated from Brookfield High School in 1990 and had been a member of the band Great White, best known for its platinum-selling album “Once Bitten” and the hits “Once Bitten, Twice Shy” and “The Angel Song,” since 2000.

“America’s Deadliest Rock Concert: The Guest List” will debut at 8 p.m. Feb. 20.