I have never been a fan of Liam Gallagher as a solo artist, but I loved some songs of Oasis during their heydays. However, it is unlikely that they will reunite for now considering he and his brother Noel Gallagher are not in good terms. We should not conclude though, that they will never reunite. When money talks, it can unite enemies.
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For those who never listened to them, try their "Dig Out Your Soul" album!