Thunderstruck is the first tune off of AC/DC's album "The Razor's Edge" released in 1990 and it's a heater! This is definitely one of their more complicated songs. As far as the introduction goes, it's all 100% legato in your fretting hand where you don't use your pick at all, which can be pretty hard to get down correctly. This was actually the first song that I practiced for hours and hours on end in order to really get that intro line down. In the song itself, the rhythm guitar holds down a bouncing rhythm that's not very typical for Angus Young, but is nonetheless a very cool rhythmic pattern that sounds more complex than it plays. On top of all of this, there are some great solo licks that are based around the pentatonic pattern and incorporates some odd note groupings, pull offs, string bending, and very vocal style of phrasing.