A lawyer representing the deceased guitarist of a band called Spirit said he will file a copyright infringement lawsuit against Led Zeppelin claiming the intro of Stairway to Heaven was ripped off from the below song. I think the disputed riff starts about 45 seconds in. What do you think?

More on the story: http://www.usatoday.com/story/news/nation-now/2014/05/20/led-zeppelin-stairway-to-heaven-taurus/9317929/

Taurus - Spirit