A:
Acoustic Performances : G4 showed their ability to give an acoustic performance when they sang My Way during the show.
Ashley Tabor : G4's co-manager.

B:
Baby One More Time : Originally sung by Britney Spears. G4 performed this song during the X Factor.
Barbershop Quartet :
Barcelona : Track performed on Queen Mania with Lesley Garret.
Ben Thapa : Member of G4, graduated at Guildhall school of music. Ben is from Cambridge and born on 2nd March 1982.
Bohemium Rhrapsody : Originally sung by Queen. G4 performed this song during the X Factor, it is also their debut single and features on their self titled album.
Broken Vow : Debut Album Track, also sung by Josh Groban.
Buskers : Before the X Factor, G4 used to busk in London's Covent Gardens to help with college funds/debts e.t.c.

C:
Call on Me :Track sung on Hit40Uk Chart show
Circle Of Life : Debut Album Track, also performed on the show. Originally by Elton John. Taken from the musical Lion King.
Creep : Debut Album Track, also performed on the show. Originally by Radiohead.
Crazy For You : Track performed on Madonna Mania.
Cry Me A River : B-Side to BoRap single. Song first performed on CDUK, Originally performed by Justin Timberlake.

D:
Don't Look Back In Anger : Song performed on the show, originally performed by Oasis.

E:
Everybody Hurts : Debut Album Track, also performed on the show. Originally performed by REM.

F:
Faye Sawyer : G4's stylist during and after the show.
Flower Duet : Debut Album Track.

G:
G4-online.co.uk : An amazing G4 fansite created by Celia. And run by her and her team of moderators.
G4site.com : The OFFICIAL G4 Site. Check here for latest G4 news.
Guildhall Four : The meaning of G4. Guildhall because that is where they studied music, and Four because there are four members in the band.
Guildhall School Of Music And Drama : School where G4 first met and studied.

H:
Hair Awards : G4 won the award for "Best Celebrity Hairstyle" in 2004, beating top celebs including David Beckham and Duncan James.

I:
Initiative : G4 showed this when they first applied for the show.
Intelligent :

J:
Jerusalem : Debut Album Track.
Jonathan/Jon Ansell : Member of G4, graduated at Guildhall school of music. Jon is from Bognor Regis and born on 10th March 1982.

K:

L:
Lesley Garret : Clasical Artist who dueted with G4 on Queen Mania.
Life On Mars : Debut Album Track, orgiginally sung by David Bowie.
Louis Walsh : G4's mentor during the show who now manages them. We can expect to hear big things from G4 judging by the success of Louis' other artists such as Westlife and Girls Aloud.

M:
Mad World : Song performed on the Radio. Originally by Tears For Fears.
Matt Stiff Member of G4, graduated at Guildhall school of music. Matt is from Grimsby and born on 13th December 1979.
Mike Christie Member of G4, graduated at Guildhall school of music. Mike is from Surrey and born on 21st April 1981.
My Way Debut Album Track, also performed on the show. Originally sung by Frank Sinatra.

N:
Nessun Dorma : Debut Album Track, also performed on the show. Originally by Pavarotti.
Number One : Is the position that their Debut Album charted.

O:
Oh Holy Night : Song performed on the show.

P:
Platinum : The debut album G4, headed for platinum after a week on sale, then it went platinum and later double-platinum.
Popera : Genre given to G4 by the media.

Q:
Queen : G4 are famous for successfully taking of Queen songs such as Bohemium Rhapsody and Somebody To Love. Among their celebrity fans includes Queen guitarist Brian May. He says he wants to record "Who Wants To Live Forever" with them.

R:
Royal Albert Hall : G4 performed here, among others who took part in a special Operatic Concert to raise money for charity.

S:
Saturday Night Takeaway : G4 performed two tracks; one with Ant and one with Dec. It is here where we got the much loved saying's "Ding Dong" and "Bob From Kent".
Silent Night : Song performed while they turned on London's Leicster Square Christmas lights in 2004.Smells Like Teen Spirit : Song performed on the radio. Originally by Nirvana.
Somebody To Love : Song performed on the show. Originally by Queen.
Sony Records : G4 signed a record deal with Sony Music for a reported 1.4 Million.
Suits : G4's trademark attire, they are shown wearing them on the album cover.

T:
Talent : Something you can certainly say G4 have. We wish them all the luck for the future.
To Where You Are : Debut Album Track, also performed by Josh Groban.
Tour : G4 took part in the UK for the X Factor tour. And now have their very own tour to start in May/June.

U:
Unique : G4 have their very own 'unique' style. The are one of the first operatic-pop bands we also have Il Divo and Eurovision hopefulls Trilocore, who fit into the category.

V:
Voices With Soul : X Factor's Corene, Hilda & Grace (Voices With Soul) are the support act for G4's debut arena tour (May/June 2005).

W:
Westlife : Earlier this year (2005), G4 got the chance to support Westlife on their tour in Ireland.
When I Fall In Love : Song performed on the radio and on ITV chat show This Morning.

X:
X Factor : TV show in which G4 were the runners up.

Y:
YMCA : Song performed on Radio One. Originally by The Village People.
You'll Never Walk Alone : Debut Album Track, also performed on the show. Originally by Gerry And The Pacemakers.

Z:
Zoomed : The debut album zoomed in at number 1 in the album charts.