Black Bart
Ancient Mariner
Apart from The Soundhouse Tapes (one might argue it is rather a single though).I meant that they've never done an EP of new material before.
I don't think that a band as conservative (and successful) as IM would do it anyway. But they did release a double album for the first time not long ago so they are technically able to suprise. Is there an accountant specialized in the music business on this board? Their opinion could be enlightening.