In 1979, he released a soundtrack album, Journey Through The Secret Life Of Plants for a documentary The Secret Life Of Plants. The album used a computer melodian virtually throughout. The album contain the No.1 ballad "Send One Your Love". The album had been called "odd" "goofy" "nerdy" and "foolish". Wonder blamed Motown for not promoting the album properly. In 1980, Wonder released Hotter Than July which included "I Ain't Gonna stand For It", a country-style song about a man whose property has been repeatedly trespassed, "Master Blaster (Jammin')", a reggae tune dedicated to Bob Marley, "Lately", a ballad and "Happy Birthday", a song in memory of Martin Luther King Jr used for Wonder's campaign to make Luther's birthday a national holiday. His next was a greatest hits album titled "Original Musiquarium I" featuring 4 new singles "That Girl", "Do I Do", "Front Line" and "Ribbon in The Sky". In 1983, Wonder contributed "Stay Gold" to the drama "The Outsiders". He then scheduled an album to be titled People Work, Human Play. The album never surfaced and instead 1984 saw the release of his next soundtrack album The Woman in Red.It spawned the hit single "I Just Called to Say I Love You" which reached number one in all the countries with charts at the time, therefore becoming his bestselling record. It was Wonder's only number one in the UK. It was number one there for six weeks. In 1985 Wonder released the digital album In Square Circle and featured on Dionne Warwick's single "That's What Friends Are For" with Elton John and Gladys Knight. It reached number one in the US. Wonder shared the Grammy Award for Best Pop Performance by a Duo Or Group With Vocal. In 1987 Wonder released the album Characters which featured hit singles "Skeletons" and "You Will Know", but was subject to mixed reception. Michael Jackson's album "Bad" was released. Wonder featured on the album's fifth song "Just Good Friends". In December 1987 Wonder released a single called "Get It", a duet with MJ in turn for Just Good Friends.