Lately I've been watching a little complex grow You know, you gotta know That's why I chose to tell ya That humble stance and timid glance makes your world turn so slow You know, you gotta know There's no one going to help you Watching you, that shyness too, with everyone you know You know, you gotta know That's how they step around you It takes you twice the time to find the things you're looking for You know, you're moving slow No one will stop to tell you You can light up anyone you please You should spend less time down on your knees Lately I've been watching a little complex grow You know, you gotta know That's why I chose to tell ya That humble stance and timid glance makes your world turn so slow You know, you gotta know There's no one going to help you (repeat 5X
Sadler's technically doing the lead vocals, incl. the part "You should spend less time on your knees". Gilmour's doing the harmony vocals, as he should. Wouldn't sound right without the harmonies.