Emma Bunton performed 2 become 1 song solo, with acoustics only and it was awesome. 
Check it out for free on youtube.com, search "emma bunton 2 become 1". Anyway, this is my version of the song. 
 
Ebm7             Db7 
Candle light and soul forever 
F#7                G#7 
A dream of you and me together 
Ebm7      Db7       F#7       G#7 
Say you believe it, Say you believe it 
Ebm7               Db7 
Free your mind of doubt and danger 
F#7         G#7 
Be for real don't be a stranger 
Ebm7     Db7       F#7      G#7 
We can achieve it, We can achieve it.. 
 
B                 Bbm7 
Come a little bit closer baby 
G#m7       Db 
Get it on, Get it on 
     Bbm7          G#m7 
Cuz tonight, is the night 
B          Db 
When 2 become 1 
F#                C#                     B 
I need some love like I never needed love before 
F#                 C#             B 
I had a little love, now I'm back for more 
A        B       F# 
Set your spirit free, 
A             B      F# 
It's the only way to be
 
Ebm7        Db7      
Silly games that you were playin 
F#7         G#7                
Empty words we both were saying 
Ebm7          Db7      F#7           G#7 
Let's work it out boy, Let's work it out boy 
Ebm7     Db7  
Any deal that we endeavor 
F#7            G#7 
Boys and girls feel good together 
Ebm7       Db7       F#7        G#7 
Take it or leave it, Take it or leave it 
 
B                    Bbm7 
Are you as good as I remember baby? 
G#m7       Db 
Get it on, Get it on 
Bbm7         G#m7 
Cuz tonight, is the night 
B          Db 
When 2 become 1 
 
{Chorus} 
{guitar solo} 
B               Bbm7 
Be a little bit wiser baby 
G#m7       Db 
Put it on, Put it on 
Bbm7         G#m7  
Cuz tonight, is the night 
B          Db 
When 2 become 1..