Haggard appeared on the cover of "TIME" on May 6, 1974. He also wrote and performed the theme song to the television series "Movin' On", which in 1975 gave him and The Strangers another number-one country hit. During the early to mid-1970s, Haggard and The Strangers country chart domination continued with songs such as "Someday We'll Look Back," "Grandma Harp," "Always Wanting You," and "The Roots of My Raising." Between 1973 and 1976, he and The Strangers scored nine consecutive number-one country hits. In 1977, he switched to MCA Records and began exploring the themes of depression, alcoholism, and middle age on albums such as "Serving 190 Proof" and "The Way I Am". Haggard sang a duet cover of Billy Burnette's "What's A Little Love Between Friends" with Lynda Carter in her 1980 television music special, "Lynda Carter: Encore!" He also scored a number-one hit in 1980 with "Bar Room Buddies," a duet with actor Clint Eastwood that appeared on the "Bronco Billy" soundtrack.