This song is aptly titled. It's just an aural version of orange juice...without the pits. Goes down really smooth. Veering a bit away from her Connie Francis approach to music, Mariya Takeuchi（竹内まりや） went to LA to make her 4th album, "Miss M". The Side A songs (remember, these were the days of LPs) were recorded there while the Side B songs were done in Japan. "Morning Glory" was a Side A tune, and it reflected that sheen of American AOR-ness which Takeuchi can do so well.
And it was quite the international collaboration...amongst Japan, Canada and the United States. The Japan side was represented by Takeuchi, Tatsuro Yamashita（山下達郎）who had written and composed "Morning Glory", and Yasuhiro Abe（安部恭弘）, EPO and Shigeki Miyata（宮田茂樹）provided backup vocals. From Canada, the David Foster helped arrange the rhythm section and was on keyboards. And from America, a good chunk of the band TOTO (Jeff Porcaro, David Hungate, Steve Lukather) was the rhythm section. And lastly, producer and arranger Jay Graydon (Al Jarreau, The Manhattan Transfer, etc.) was on guitar.
"Morning Glory" was never released as a single, although the album "Miss M" peaked at No. 14 on the Oricon weeklies.