Fulfillment, Something Worth Remembering (1969)

Johnny West is a recently discharged US Army soldier who returns to his hometown of Ermaville, Texas after a tour of duty in Vietnam where he decides, instead of working for a local oil drilling company, to instead study classical piano at the local university, but makes the mistake of marrying his high school sweetheart Kay, who reveals herself as a money-hungry tramp as soon as the honeymoon is over. In order to support her extravagant spending sprees, Johnny forms a rock 'n' roll band called "Johnny West and the Wildcats" and starts doing small gigs. While Johnny and the Wildcats are away, Kay starts to fool around with a wealthy, older man and oil baron Peter van Carter. After the two philanderers kill themselves in a DWI accident during one of their trysts, Johnny hits the bottle and abandons his plans to be a concert pianist... until he meets Patricia van Carter, the attractive middle-aged widow of the dead oil guy. They fall in love, marry in Mexico, and have a romantic honeymoon in Spain before Pat reveals a secret about herself. Meanwhile, Patricia's teenage daughter Jessica tries to frame Johnny for murder after he spurns her sleazy advances.