
From September–October of the same year, he gave solo concerts titled Simply Sonu in Canada and Germany, becoming the first Indian singer to do so.

In May–June 2007, he participated in The Incredibles tour with Asha Bhosle, Kunal Ganjawala, and Kailash Kher. Nigam has performed in countries in North America, Europe, the Middle East, Africa, Asia and Australia. Nigam has released pop albums in Hindi, Kannada, Odia, Chhattisgarhi and Punjabi, as well as Hindu and Islamic devotional albums.

He has sung in Hindi, Odia, Bengali, English, Gujarati, Kannada, Maithili, bhojpuri, Malayalam, Manipuri, Marathi, Nepali, Tamil and Telugu till date.

He has recorded Romantic, Rock, Devotional, Ghazal and Patriotic songs.
