'bout fuckin' time frankly, quite a few DJs (myself included once over) have bored listeners by putting "Taurus" back to back with "Stairway to Heaven." Bring on It's a Beautiful Day dragging the surviving Deep Purple Mk 2s into court to question the parentage of "Child in Time." None of these people at the time seriously thought they were writing music that would have such staying power, or so many lawyers making money off it 45 years later.
Oh aye, and The Blues Magoos might have summat to say about Deep Purple's "Black Night"...I could go on but, rant over!
Jon Lord never hid that fact though - quite the opposite!
The thing about Stairway is that Randy California had all the time in the world to sue but didn't, because all he wanted was a thank you or acknowledgement from the Zep boys. Which never came. Now, whoever holds rights to his music must see this as an easy money maker. From memory, California's band toured with Zeppelin in the late 60s, playing Taurus as part of their gig. Within a few years, Zep release a highly familiar sounding song. Its a bigger open and shut case than My Sweet Lord.
Trivia fact which, I think, is true; that moment in Spinal Tap where it is revealed the beautiful piano melody is called "Lick my Love Pump"...Jon Lord wrote that little piano piece.