Title of album by Alan Parsons, the second after the breakup with Eric Woolfson. True to the tradition of Project albums, there is a common theme to the songs on the album: flying and related topics.
There was a limited edition, which contained a second CD. This was a CD-ROM and AFAIK this was the first time a CD-Rom was included with a regular music CD ever. The CD-ROM contained an encyclopedia's worth of information about flight, air travel, space travel and flight pioneers in animated sequences, underlaid with music from the album. The CD had many hidden features, and to this day I am not certain if I have found all menus
On Air has recently seen a re-release in the high definition DTS surround sound system.