Timothy B. Schmit provided the song title and composed the nucleus of "I Can't Tell You Why," which he then presented to Glenn Frey and Don Henley and they completed the song together. Henley described the finished song as "straight
Al Green" and said that Frey, an
R&B fan from Detroit, was responsible for the R&B feel of the song. Frey said to Schmit: "You could sing like
Smokey Robinson. Let's not do a
Richie Furay,
Poco-sounding song. Let's do an R&B song." Schmit describes the song as "loosely based on my own experiences." Schmit said: "I had some writing sessions with Don and Glenn and I threw out a bunch of my ideas and that one [for "I Can't Tell You Why"] stuck. I had [composed] a pretty good part of it, not a huge part but enough for them to think 'That could be good' and go with it. So Don, Glenn and I finished it over a few all night sessions." He also said, "When it was being developed in the studio...I knew it was a great song. I [thought] 'Yes! This is an amazing debut for me.' When we finally mixed it, we had a little listening party at the studio. As people were hearing it, Don turned to me and said, 'There's your first hit.'" Schmit sang the lead vocals, with Frey and Henley singing
counterpoint. Schmit also played the bass on the track, which has a distinctive riff believed by Schmit to have been devised by Frey. According to Henley, Frey wrote the counterpoint part. In 1980, the band promoted the song with a music video featuring Schmit on bass guitar accompanied by Frey on the
electric piano, although Frey recorded the guitar solos on the recording, with Henley on drums,
Don Felder on electric guitar, Joe Walsh on
organ and Walsh's touring sideman
Joe Vitale on
ARP string synthesizer. Live versions of the song were released on the 1980 album
Eagles Live and 1994's
Hell Freezes Over. Schmit also performed "I Can't Tell You Why" while on tour as a member of
Ringo Starr & His All-Starr Band in 1992. Their performance of the song was included on the 1993 live album
Ringo Starr and His All Starr Band Volume 2: Live from Montreux. ==Reception==