Annie Mac is Greg's Star Caller ahead of Ibiza plus we have today's Summer Mix
Radio 1's own Annie Mac joins Greg for Star Caller!
BBC Radio 1's Summer Mix - non-stop music!
Gabby Logan joins Greg to talk about her new sheepdog talent show!
Richard Osman from Pointless is Greg's special guest.
Little Mix surprise a listener in Star Caller, plus the Official Chart Update.
Joe Lycett is Greg's special guest.
We also manage to get John Newman on the phone