Beautiful music and wonderful singing. I wasn't too certain about Kowalski's singing before this purchase, as I had previously 'you-tubed' him and thought that some of the uploads indicated his performances were uneven. However, his voice on this album is most definitely up there with the best, a rich mezzo sound not unlike Max Emanuel Cencic's, rather than the countertenor sounds of Daniels, Scholl, or Minter. The music is varied and well selected, with 3 Carl Heinrich Graun arias and 2 by Hasse amongst Bononcini, Telemann, King Friedrich, and Agricola. All strong pieces. It is hard to find full operatic works by Graun and Hasse, and considering that Hasse (along with Handel) was one of the greatest C18th composers, admired by Mozart, these inclusions by Kowalski are important. If you enjoy Baroque arias and want to extend your listening beyond the Handel selections that populate many CDs by countertenors, this is a must buy, before it's unavailable.