The first number-one hit on the chart in 2011 was Martin Solveig and Dragonette's "Hello", and the last was Studio Killers' "Ode to the Bouncer".
[1] Artists and acts that had or were featured in at least one song that topped the Mega Single Top 100 that year for at least one week were Martin Solveig, Dragonette, Jan Smit, Ben Saunders, Dean Saunders, Adele, 3JS, Lady GaGa, Nick & Simon, Alexis Jordan, Glennis Grace, Frans Duijts, Do, Coldplay, Rochelle Perts, Guus Meeuwis, Sak Noel, Lucenzo, Big Ali, Don Omar, Nick Schilder, Thomas Acda, Keizer, Paul de Munnik, Gotye, Kimbra, The Voice of Holland, Gers Pardoel, Jeroen van der Boom, Metropole Orkest (Dutch: The Metropole Orchestra), Birdy, Sandro Silva, Quintino and Studio Killers.
[1] Out of these acts, 20 of them, Dean Saunders, Alexis Jordan, Glennis Grace, Frans Duijts, Rochelle Perts, Guus Meeuwis, Sak Noel, Don Amor, Big Ali, Lucenzo, Nick Schilder, Thomas Acda, Simon Keizer, Paul de Munnik, Gotye, Kimbra, Birdy, Quintino, Sandro, and Studio Killers, achieved their first number-one single on the chart that year, either as lead or featured artist.
Two artists, Jan Simit and Adele, had 2 songs that went number one.
23 singles that topped the chart were solo songs, while eight others were collaborations.