He explained: "I look after it a bit but not too much because you don't want to be sounding- I don't want to sound like Chris Martin.
"That was when I was about 25, and now I realise it's like that, you've got to warm up if you want to carry on singing. So I do warm up a little bit.
"None of that 'la la la' nonsense, no, I just sing a tune, man, on the guitar on my own and that."
'The Roller' hitmaker also said he'd frequently get lonely when singing for his last band Oasis - in which he appeared alongside the other members of Beady Eye and his brother Noel Gallagher - because the vocals would be the last part of the album to be recorded.
He added to the UK's Absolute Radio: "With Oasis, I'd be sort of at the end on my own surrounded by candles, like Aled Jones, singing on my own, just thinking 'Is there anybody else in this studio?' it was very lonely, man."
'Beady Eye's debut album, 'Different Gear, Still Speeding', is released today (28.02.11).
The full interview with Liam will be broadcast tomorrow (01.03.11) on the Christian O'Connell Breakfast show.