This album shows that Frusciante is a genius, whether its his wide ranging vocals or his gentle and soulful guitar playing. It seems to get better with every listen and you realise the brilliance of songs such as the slow and beautiful 'Before The Beginning', the warm 'God', and the powerful 'Central'. For me 8 out of the 10 songs are essential listening.
The only negative for me is that sometimes it seems repetitive, eg. the song 'Dark/Light', the last 5 min of the song is the same 'riff' over and over again, it is a good 'riff' but gets a bit tiresome after 5 mins. Also , although alot of people seem to like them, i don't like 'Song To The Siren' and 'After The End', i find they are a bit boring, but they might grow on me after a few more listens.
Overall i think this is Frusciantes second best album (my personal favourite is 'Shadows Collide With People') and is well worth buying if you understand good music because its not necceserally the easiest album to listen too, but after a few listens you will unlock the magic of this album and you won't regret it!