Sonu has released a number of pop albums, in Hindi, Punjabi and Kannada. The most recent addition to his Hindi releases is Classically Mild, a semi-classical album. He has also released Hindu and Islamic devotional albums, as well as albums of Mohammed Rafi's songs. These are from the Rafi Ki Yaadein collection in his early years, which have been re-released in September 2007 as a six-disc collection of 100 songs, titled Kal Aaj Aur Kal, in Mohammed Rafi's memory. In 2008, soon after releasing Classically Mild, he released a single Punjabi track called "Punjabi Please" and Rafi Resurrected, a two-disc collection of Mohammed Rafi songs with music by the Birmingham Symphony Orchestra. He has contributed to the lyrics of several of his album songs and directed the music for his album Chanda Ki Doli. His last album was Neene Bari Neene in Kannada.
After the death of Michael Jackson, of whom Sonu Nigam is a huge fan and who has considerably influenced his singing (as is evident in his rendition of "Dil Deewana" in Pardes), Nigam released a tribute song to Jackson in collaboration with his fans on Facebook. The song made it to an 18-song global compilation of tribute songs CD The Beat of Our Hearts.
Over the years, Nigam has given concert performances in many countries, including United States, Canada, UK, France, Germany, Belgium, Holland, Spain, Australia, New Zealand, Pakistan, Nepal, Bangladesh, Russia, Afghanistan, UAE, Kuwait, Saudi Arabia, Thailand, Indonesia, Singapore, Malaysia, West Indies, Suriname, Mauritius, Nigeria and South Africa. In May/June 2007, he participated in a star-studded show in North America called "The Incredibles," in which Asha Bhosle, Kunal Ganjawala and Kailash Kher participated. In September and October of the same year, he gave solo concerts titled "Simply Sonu" in Canada and Germany (becoming the first Indian singer to perform in the latter country). In April 2008, he did a marathon of concerts in cities in India, promoting his Punjabi single "Punjabi Please".
In November 2007, at the inauguration of Harvard University's 28th president, Dr. Drew Gilpin Faust, Nigam sang Mahatma Gandhi's favorite bhajan, "Vaishnav Jan To Tene Kahiye", with the Harvard College Sangeet.
In July 2008, he participated in a three-city tour of the United Kingdom, singing Mohammed Rafi songs with the City of Birmingham Symphony Orchestra. This followed the release of these songs by the CBSO and the Indian music company Sa Re Ga Ma in the album Rafi Resurrected.
Amongst several other concerts, he notably participated in a US tour with Sunidhi Chauhan in 2009 called "The Explosion 2009" tour and in a UK tour titled "All Izz Well" in November 2010.
