 In addition to his production work, Miro has made guest appearances for many of the bands he works with as a keyboard player, and also provides orchestral arrangements.He served a particularly long period as a guest of Kamelot, providing all keyboards on their studio albums from 1999 until 2005, when they hired the tour musician Oliver Palotai as a full-time member.In 2004, he participated in "Aina", a metal opera featuring many guest heavy metal musicians.