Ah, live musicals - the perfect combination of music, drama, and spectacle. As a detective, I've seen my fair share of musicals in my day, and let me tell you, there are some real gems to be found in Spain. So, my dear detectives-in-training, let's take a look at some of the best places to catch a musical in Spain, and whether or not they're in English or Spanish.

First up, we have the Teatro Lope de Vega in Madrid. This beautiful theater is home to a variety of musical productions, ranging from classic shows like "The Phantom of the Opera" to newer hits like "Hamilton." Most of the shows at the Lope de Vega are in Spanish, but some productions may have English subtitles, so be sure to check the details before you go.

Next on our list is the Teatro Coliseum, also in Madrid. This historic theater has been hosting musicals for over 100 years, and it's still going strong today. From the Spanish version of "Mamma Mia!" to the rock opera "Jesus Christ Superstar," there's something for everyone at the Coliseum. Most of the shows are in Spanish, but again, some productions may have English subtitles.

Moving on to Barcelona, we have the Teatre Tívoli, which has been entertaining audiences since 1847. This beautiful theater hosts a variety of musicals, from Broadway hits like "The Lion King" to original Spanish productions like "Forever King of Pop." Most of the shows at the Tívoli are in Spanish, but some productions may have English subtitles or even be performed in English.

One of the most notable theaters in Valencia is the Teatro Olympia, which has been around since 1915. The theater has hosted many musical productions over the years, including Spanish versions of international hits like "Les Misérables" and "The Beauty and the Beast." Most of the shows at the Teatro Olympia are in Spanish, but some productions may have English subtitles.

Another theater in Valencia that is worth checking out is the Palau de les Arts Reina Sofia, which is primarily known for its opera productions. However, the theater also hosts other performances, including musicals. Some of the shows on offer here include "The Addams Family" and "Sister Act." Most of the shows at the Palau de les Arts are in Spanish, but some productions may have English subtitles.

And let's not forget about the Palacio de la Prensa in Madrid, which has been a staple of the city's cultural scene since the 1920s. The Palacio is home to a variety of events, including film screenings, concerts, and, of course, musicals. Some of the shows on offer here include "The Addams Family," "Dirty Dancing," and "Fame." Most of the shows at the Palacio are in Spanish, but some productions may have English subtitles.

Last but not least, we have the Teatro Real in Madrid, which is one of the most prestigious opera houses in the world. While the Teatro Real is primarily known for its opera productions, they also host a variety of other events, including musicals. Some of the shows on offer here include "West Side Story," "The Sound of Music," and "Chicago." Most of the shows at the Teatro Real are in Spanish, but some productions may have English subtitles.

So, there you have it, my dear detectives-in-training - some of the best places to catch a musical in Spain. As you can see, most of the shows are in Spanish, but there are some productions that may have English subtitles or even be performed in English. And who knows, maybe you'll even learn a little Spanish while you're at it - after all, there's nothing like a good musical to help you pick up a new language. Happy singing and dancing!