Name a band with two lead singers

[Penelope Stopit]

I'll go first

The Cars - Benjamin Orr and Ric Ocasek

[paulguitar]

The Beatles
KISS
Eagles

[matrignano]

Sonny and Cher
Simon and Garfunkel
Linkin Park (sometimes)

[CypSIdders]

Proclaimers

[Heartworm]

Raging Speedhorn
Lacuna Coil

[S. Gonzales Esq.]

XTC

[giveitfish]

Tears for Fears

[Voldemort]

Treorchy Male Voice Choir

[Hub]

Gomez (actually 3!)
Ride

[V8covin]

Deep Purple

[SpudLink]

Fleetwood Mac? During their most successful period I would say Stevie Nicks and Christine McVie were joint lead singers.

[gazza285]

Red Fang, NoMeansNo, Crass, Joyce McKinney Experience, Chumbawamba.

[Gary29]

Oasis

[DavidY]

Squeeze
The Beautiful South

[Gary29]

The Cribs

[craigjm]

The Band
The Beach Boys
Pink Floyd
The Clash
The Beautiful South
B52s
ZZ Top
Cream
Deep Purple

[vladcjelli]

According to the one song of theirs I saw on Jools Holland, I nominate Field Music.

https://youtu.be/xsgFS91h9r8

(I apologise if this is as much of an ear worm for everybody else as it is for me)

[mfmman]

The Specials
First Aid Kit
Of Monsters and Men

[DaffyT4]

Dropkick Murphys
Rezillos

[Dr Murdoch]

Libertines
Band of Skulls