AOR stands for either, Adult-Oriented Rock, or Album-Oriented Rock.
The genre was a mix of jazz funk and soft rock, a staple of the FM radio channels in the US and inspiring a movie called FM, with a classic album soundtrack.
SAHB were The Sensational Alex Harvey Band. Harvey had temporarily quit the band at this time, allowing the rest of the band to indulge in their interest in other genres like Funk, Soul and AOR.
Harvey endorsed the album, entitled Fourplay, recorded and released in 1977, helped in its production and even appeared on the back cover of the album sleeve. It is a rare album and one of my all-time favourites.
Complete album - Fourplay by SAHB (without Alex) on YouTube