Green Day: Rock Band

Something worth of note is that Song of the Century is a vocals only song and this game only supports USB microphones and Lips microphones (Thanks to BrutishMuffin for confirming this) and not headsets.

Good Riddance also has no drums so if you are a drummer play that on something else as well.

It seems there are conflicting results when it comes to this achievement, so I advise to look at the achievements screen if you are concerned about these songs.

That said this shouldn't be difficult at all no difficulty is mentioned so feel free to bump down a difficulty if a song gets too tough. Also don't forget that it's across all instruments.

I played the game through completely on Guitar, and I received this achievement. I did not touch a microphone at all during the process. I can't sing, I don't even bother with any of the vocal achievements unless I have someone else do it for me.

However, I received this achievement in Xbox Live Band Quickplay. The setup I had when the achievement unlocked:

I finished all songs that I could with guitar previously, in solo Career, and I had 5 stars on them all.

I was playing with someone over LIVE who was on Mic and Bass when this achievement unlocked.

I selected "Song of the Century", and he 5-Starred it.

AFTERWARDS we played a song that required all instruments, and after the song both achievements unlocked for me. [3star all songs and 5star all songs].

So, I assume if you play Song of the Century first, then play another song and 5-star it, you SHOULD get the achievements.

Unless it was just a glitch, I'd advise you to try this if you, like me, refuse to pick up a microphone.

Good luck!

And by the way, we were both on Expert. I'm not sure if that will affect anything or not, however.

This achievement can be attained across different instruments instead of all the same, it requires any difficulty, and the stars from career and quickplay both count towards it!