Let me open by saying if this wasn't the first song in Rock Band to have a bass solo, it is a song in Rock Band that has a bass solo.
If that's not a sell right away, I'm kinda surprised, but I think you'll come around.
The verse is largely eighths yellow and red followed by a short pause, with the red turning into double strums early on. Admittedly, this is not a good opening to the sell.
However, you're quickly pulled into the chorus, which scales all over the place. And the chorus is just a hop, skip, and jump away from the aforementioned bass solo. Which, quite frankly, is excellent fun to play and blows the guitar part of the solo out of the water.
From there, the verse moves up a fret, and just as quickly from there the song turns into a fairly long jam. If there's one thing John Entwistle knew how to do, it's jam, and from there on the song is just great fun.
In summation, the only thing that really doesn't sell the song is the verse rhythm, and it plays such a small role in the grand scheme of this awesome bass that I can't see it being something that actually makes someone turn away. Also, perhaps you didn't hear me, BASS SOLO.
1/5 - If you focus on this instrument, you should not buy this song.
2/5 - Fans of the song/band should be wary if they focus on this instrument.
3/5 - Alright on this instrument, buy it if you're a fan.
4/5 - Fans of this instrument could benefit from checking out this song.
5/5 - If you focus on this instrument, you should buy this song.