This is the "la la la" vocal melody.
[ Tab from: https://www.guitartabs.cc/tabs/t/tv_on_the_radio/dlz_tab.html ]
E|--------------19----19------------19------------------|
B|----------------------------19----------19--17--------|
G|--------16--------------------------------------20----|
D|--18--------------------------------------------------|
A|------------------------------------------------------|
E|------------------------------------------------------|
--------------------------------------------------------|
--------------16-------------------------16-------------|
--------16----------18-------------18--------18--16-----|
--18-------------------------16-------------------------|
--------------------------------------------------------|
--------------------------------------------------------|
