The a340 uses the Rolls-Royce Trent 500 engines, the boeing 777 also uses the Rolls-Royce, except that those use trent 800 engines! So that's why they both sound similar!
mautu ioapo lufthansa new airbus a340 600 take off in munich to new yark thonk you confrom thonk you in my loaptop compter goodday by mautu ioapo youtube videos 5.3.2014