While working as a team, Shankar and Jaikishan used to compose their songs separately. Generally, Shankar liked to work with Shailendra and Jaikishan with Hasrat Jaipuri though there are notable instances where Shankar worked with Hasrat and Jaikishan with Shailendra. Of course there are a number of songs done jointly in which both of them contributed. Between the two, Shankar was the senior partner and hence, he would usually arrange the orchestra, even for Jaikishan's songs. There was a gentleman's agreement between them for not identifying the actual composer of the song. As a result, it has been a popular pastime for S-J aficionados to try to tell a Shankar song from a Jaikishan song. Dance numbers, title/theme songs and soulful songs were Shankar's forte while Jaikishan was a master of composing background score, apart from romantic songs (he is generally regarded as the best ever in this genre) and simple, catchy compositions which became instant hits ("Ehsaan Mere Dil Pe" being a typical example of such songs). However, Shankar was no smaller in this aspect of devising simple 'straight line' tunes: "Mera Joota Hai Japani" (Sri 420) being the best example of this genre.