Don't call it a comeback, because that would suggest Sinead O'Connor hasn't, at the very least, remained an intriguing creative force over the past decade or so. There is, however, the feeling that she's hitting greater heights of late than ever before.
This summer, I'm Not Bossy, I'm The Boss has built upon the kudos thrown How About I Be Me (And You Be You)'s way and this afternoon's Main Stage slot at Electric Picnic confirms that she is still a vital musical force to be reckoned with 27 years on from the release of her debut album.
Essentially, when Sinead's happy, we're all happy. Dressed in black and looking great, she's energetic and engaged throughout, feeding off the crowd's energy and generally revelling in the music-making experience.
She can rock out with the best of them, and early on 'Take Me To Church' is a highlight (if maybe the second best 'Take Me To Church' song sang this weekend - no disgrace Sinead!).
In truth, however, you really want her to slow things down to a simmer and unleash that supernatural voice of hers. '4th And Vine' is beautiful, but it is when she strips things back to the bare bones, simultaneously singing with her daughter Roisin Waters and embracing her lovingly, that the true heart of this set is revealed.
After that, we get a rendition of the graceful 'Harbour', dedicated to Roisin and touching everyone assembled.
It acts as a reminder of the earthy, spiritual and utterly Celtic side of Sinead O'Connor. A unique talent, and we should be honoured she's ours.