Sea Sew is Hannigan's debut solo album after her split from Damien Rice. Lucky for us that they parted, or else this album might never have happened. Hanningan's vocal are superb, on disc or live (check out the videos of her on youtube for proof of this). She has a very unusual sound, breathless but warm and astoundingly feminine. The face that she has an old-fashioned grace and beauty is just a plus, in my opinion ;-) In an industry that showcases gaudy bimbos for the most part she is definitely a breath of fresh air.
There are definitely a number of stand-out tracks on the record, including (in my opinion) "Ocean and a Rock", "I don't know" (the track that seems to have really broken her out), "Keep it all", "Pistachio" and "Lille" (another hit for her). Your favorites might vary from mine, but I bet they'd include some of these same songs.
Should you get this album? If you like "real" music, great lyrics, and exceptional vocals, then yes. If you prefer mainstream pap, then it may not be for you.