Warthur
As well as being a widely-acknowledged masterpiece of early 70s hard rock, Who's Next is also a Who album offering a lot to fans of the Who's more progressive side - not least, the capable inclusion of synthesisers into the Who's instrumentation, and in particular the experiment synth line in opening track Baba O'Riley. The rest of the tracks show a new muscle to the group, a forcefulness honed on the Tommy tour and also captured on the best parts of Live at Leeds. Behind Blue Eyes, in particular, manages to shift between the quieter, more contemplative style of the band and their full-on rocking mode at a moment's notice. Whilst it is a shame that the Lifehouse project didn't come to fruition at the time, the band can at least be proud of producing such a quality set of songs. I'd say it's the best studio album of their career up to that point, and could be argued to be their best album full stop.