I just finished listening to Ray Charles' 1984 album, Friendship. As you can tell by the picture, I purchased this album at a garage sale a few years back for $5. This album has Ray Charlies returning to country music accompanied by a number of country stars including Hank Williams, Jr, the Oak Ridge Boys, Merle Haggard, Johnny Cash, and Willie Nelson. To this day, my favorite song on the album is the the last song on the album, "Seven Spanish Angles" with Ray Charles and Willie Nelson just singing away.
The vinyl record for Friendship contains 10 tracks, each with a featured guest (listed below). According to Wikipedia, the 2005 CD version of the album contains two additional tracks featuring Tony Bennett on one song and Billy Joel included on other song.