In a signed article in Filmfare, Jaikishan identified unwittingly the song "Yeh Mera Prem Patra Padh Kar" (Sangam) as his composition. This led to a lot of bitterness between the two, as Shankar considered it a violation of the unwritten agreement between them. At about the same time, Shankar gave a break to singer Sharda and started promoting her as the new singing sensation in preference over Lata Mangeshkar. Jaikishan, however, stuck to Lata Mangeshkar for his compositions. In this period, Shankar and Jaikishan started taking individual contracts for films though every such film continued to show them together as the composers. Mohd. Rafi intervened and helped them settle their differences; however, it is conjectured that their relationship was not the same as earlier and this impacted the quality of their compositions which had started exhibiting a decline (which is clearly noticeable in the movies released during the last phases of Jaikishan's lifetime and those released just after his demise).