IRISH rock gods U2 became rain gods last night ushering in their first Sydney concert in eight years with a summer shower.

In the opening song, City of Blinding Light, Bono acknowledged Australia's water crisis.

"Bring on the rain, it's what we need,'' he sang.

The band proved that the wait was well worth it, delivering a barrage of hits to satisfy the loyal Sydney fans who had held onto their tickets after the tour was postponed last March.

A mind-blowing display of light and sound never threatened to dwarf a band who have become the world's biggest for very good reason.

There is no doubt that the 70,000 fans had a deep and enduring connection to U2's music, sending their voices soaring to the heavens during classic anthems, One, Pride (In the Name of Love) and With or Without You - during which he pulled a girl on stage and serenaded her.

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Of course there was a strong message delivered with the music, with Bono asking for Australia's continued support for the Make Poverty History campaign, urging Sydney to remain a peaceful multi-cultural city.

U2 perform again tonight and Monday at Telstra stadium, with limited tickets available.