Main Theme (Luigi's Mansion)

The "Main Theme", also known as the "Luigi's Mansion Theme", is a musical theme composed for Luigi's Mansion by Kazumi Totaka. It is a suspenseful piece played in A minor at a  tempo, and is usually associated with the Luigi's Mansion series and Luigi himself. An alternate arrangement of the "Main Theme" is also often associated with Professor E. Gadd.

Original
The "Main Theme" is first heard in Luigi's Mansion in the cutscene where Professor E. Gadd meets Luigi for the first time. The "Main Theme" is most often heard when Luigi is in a dark hallway of the mansion and not actively engaged in combat. He may hum along to the theme as it plays, sounding more distressed as his HP gets closer to zero. It is titled 「ルイージマンション」 (Ruīji Manshon, "Luigi's Mansion") in the Nintendo Sound Selection Vol.3: B-Side Music album.

Reuses
The following list does not include ports or remakes of Luigi's Mansion.

Luigi's Mansion
Luigi's Mansion features several additional arrangements of the "Main Theme". An arrangement of the "Main Theme" plays in Professor E. Gadd's Lab. It is titled 「オヤマー博士の研究所」 (Oyamā Hakase no Kenkyūjo, "Professor E. Gadd's Laboratory") in the Nintendo Sound Selection Vol.3: B-Side Music album. This theme would become the basis arrangements associated with Professor E. Gadd in future games.

When Luigi enters a lit room, the background music goes silent while he whistles the "Main Theme".

A arrangement of the "Main Theme" is used as the Game Boy Horror's ringtone.

A different chiptune arrangement of the "Main Theme" is included in the music heard during Game Boy Horror calls.

A arrangement of the "Main Theme" plays when Luigi is outside of the mansion or in the Observatory after looking at the moon.

A arrangement of the "Main Theme" can be heard when Luigi is standing outside of the Conservatory before defeating Melody Pianissima.

The music heard during the cutscene when Luigi is trapped in the Astral Hall is a brief arrangement of the "Main Theme"

In the Clockwork Room, the clocks on the right side of the room play an arrangement of the "Main Theme" when the player interacts with them.

One of three brief arrangements plays when Luigi's NEW Mansion is built with either Rank A, Ranks B-G, or Rank H, respectively.

The Game Over theme is an arrangement of the "Main Theme".

Luigi's Mansion: Dark Moon
Luigi's Mansion: Dark Moon features three different arrangements of the "Main Theme". The first arrangement is played on a compressed synthesizer and serves as the ringtone for the Dual Scream. It is played in the key of B♭ minor in an allegro tempo.

The second arrangement is heard when Luigi is in the Bunker, as well as when Professor E. Gadd is actively calling Luigi through the Dual Scream. The arrangement is also in B♭ minor with the melody played on a with  harmony.

The third arrangement of the "Main Theme" is briefly heard when E. Gadd prompts Luigi to use the Dark-Light Device to free Mario from his painting. It is in the key of A♭ minor and ends in a B-diminished triad.

The second arrangement is reused in the Nintendo 3DS remake of Mario & Luigi: Superstar Saga, Mario & Luigi: Superstar Saga + Bowser's Minions. It plays during cutscenes with Professor E. Gadd in the Starbeans Cafe.

Luigi's Mansion 3
Luigi's Mansion 3 features four arrangements of the "Main Theme". The first arrangement is used for the Virtual Boo's ringtone and consists of a compressed square synthesizer melody played in C minor and an allegretto tempo.

The second is a slow jazz arrangement of the "Main Theme" played in the key of B♭ minor, and it is heard while Luigi is inside Professor E. Gadd's lab in the Garage.

The third is an arrangement of the first bar of the "Main Theme" in F minor and can be heard if Luigi uses the Poltergust G-00 on the tuned glass bottles in the Concession Stand of The Great Stage.

The fourth is a synth pad arrangement played in the key of E minor. It can be heard if Luigi uses the Poltergust G-00 on the records found in the Elevator Hall of The Dance Hall.

Mario & Luigi: Superstar Saga
Mario & Luigi: Superstar Saga features two arrangements of the "Main Theme". The first is a faithful arrangement of the original that plays during cutscenes with Professor E. Gadd in the Starbeans Cafe when the lights are off.

The second is an arrangement of the version of the "Main Theme" heard in The Lab in Luigi's Mansion. It plays during cutscenes with Professor E. Gadd in the Starbeans Cafe when the lights are on. Both of these were arranged by Yoko Shimomura.

Mario & Luigi: Partners in Time
In Mario & Luigi: Partners in Time, an arrangement of the "Main Theme" plays during cutscenes involving Professor E. Gadd.

Mario Power Tennis
An arrangement of the "Main Theme" plays on the Luigi's Mansion Court in Mario Power Tennis. It was arranged by Motoi Sakuraba.

This arrangement is reused for the same purpose in the game's Wii port, New Play Control! Mario Power Tennis.

Mario Party 6
In Mario Party 6 features thre arrangements of the "Main Theme". The first is a brief arrangement included in the theme titled "E. Gadd's Garage" heard in the day version of the E. Gadd's Garage board, and the second, titled "Night at the Garage", plays on the night version of the board.

The third is a mashup arrangement of the E. Gadd's Garage theme and the version of the "Main Theme" heard in The Lab. It is titled "Maze Jam" and plays before and after the mini-game Lab Brats.

Mario Party 10
In Mario Party 10, an arrangement of the "Main Theme" titled "Luigi's Theme" plays during Luigi's turn in amiibo Party.

Super Smash Bros. Brawl
Super Smash Bros. Brawl features an orchestral arrangement of the "Main Theme" titled "Luigi's Mansion Theme". In the second half of the arrangement, a plays the backing melody while a choir vocalizes the main motif. It was arranged by HAL Laboratory composer Shogo Sakai and can be played on Luigi's Mansion stage.

A -styled version of the theme littered with fermata-induced rests is heard during Luigi's introduction in the Subspace Emissary.

The former arrangement returns Super Smash Bros. for Wii U, where it can be played on the same stage, and in Super Smash Bros. Ultimate, now titled "Main Theme - Luigi's Mansion (Brawl) ", where it can be played on any Super Smash Bros.- and Super Mario-series stage.

Super Smash Bros. for Wii U
In Super Smash Bros. for Wii U, an arrangement of the "Main Theme", as well as an arrangement of the version heard in The Lab, is incorporated into the medley arrangement track "Luigi's Mansion Series Medley". It was arranged by Bandai Namco composer Hiroyuki Kawada and can be played on the Luigi's Mansion stage.

The track returns in Super Smash Bros. Ultimate, where it can be played on any Super Smash Bros.- and Super Mario-series stage.

Super Smash Bros. Ultimate
Super Smash Bros. Ultimate features a new fast-pased orchestral arrangement titled "Main Theme - Luigi's Mansion". In addition to the "Main Theme", this arrangement also incorporates arrangements of The Lab version of the "Main Theme", the title theme, the option selection sound effect, and the credits theme from Luigi's Mansion. It was arranged by Nintendo composer Maasa Miyoshi and can be played on any Super Smash Bros.- and Super Mario-series stage.

Nintendo Land
Nintendo Land features five arrangements of the "Main Theme". The jingle heard when approaching the Luigi's Ghost Mansion attraction gate is a brief arrangement of the "Main Theme".

A slow E minor arrangement of the "Main Theme" played mainly on and  plays on the Main Floor stage.

All three fanfares that play at the end of a game are different arrangements of the "Main Theme" with a repeating chord at the end. Which arrangement plays depends on if the Ghost or the Trackers win, or if there is a draw.

Mini Mario & Friends: amiibo Challenge
In Mini Mario & Friends: amiibo Challenge, two different arrangements of the "Main Theme" play in the levels of Moonlight Mansion. The first arrangement is faithful to the original and plays in the Luigi 1 and Luigi 3 levels.

The second arrangement incorporates the beat heard in Warped Mansion's [[Media:MvDKMLM WarpedMansionC.oga|third track]] from Mario vs. Donkey Kong: Mini-Land Mayhem! and plays in the Luigi 2 and Luigi 4 levels.

Mario Strikers: Battle League
In Mario Strikers: Battle League an arrangement of the "Main Theme" is one of the tracks that can play when both halves of the stadium are Spooky Mansion. An electric bass guitar plays the melody and a synthesizer and keyboard organ plays the harmony.

The Super Mario Bros. Movie
In The Super Mario Bros. Movie, scored by Brian Tyler, the main motif of the "Main Theme" is briefly heard in the track "The Darklands" when Luigi explores the titular area.

Nintendo Sound Selection Vol.3: B-Side Music
The Nintendo Sound Selection Vol.3: B-Side Music compilation album features a unique piano arrangement of the "Main Theme" titled 「ルイージマンション」 (Ruīji Manshon, "Luigi's Mansion").