Twitter has chosen Edelman as its first official PR firm both TheNextWeb and The Holmes Report write. Sources at both companies declined to comment on the relationship, but sources are saying the firm was chosen after a competitive pitch that came down to three other firms. Edelman has worked with Twitter on projects in the past and is expected to work on consumer launches going forward.

Beats by Dr. Dre, the line of audio equipment like headphones, has chosen PMK*BNC as its PR AOR. The firm has also added entertainment info site IMDb and restaurant and hospitality company The ONE Group to its roster. The firm will provide PR, digital, and marketing services to all of its new clients.

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From left to right: Prime Minister Manmohan Singh, President Obama, and President Pratibha Patil Photo: AFP

Yesterday, we spoke with Harjiv Singh, the co-founder and co-CEO of Gutenberg Communications, from New Delhi where he was wrapping up his firm’s work with “The Business and Entrepreneurship Summit.” Hosted by the U.S.-India Business Council, the event was a stop on President Barack Obama‘s visit to India.

Besides a discussion of the event and the impact that President Obama’s presence had, we talked about the Indian market, and Singh offered his advice for the many who are interested in doing just that.

“Patience is important,” he said. Singh added that with a population of more than one billion and 17 major languages, being clear about your target market is also critical.

After the jump, Ron Somers, president of USIBC, talks about the significance of PR in India.