LONDON (Reuters) - A Lebanese musician has recorded a unique duet with the Israeli Air Force by recording on the balcony of his Beirut apartment during a bombing raid. In his sound art piece, trumpeter Marzen Kerbaj intermingles his music with the sounds of bombardment. Explaining how he put together his unique composition, Kerbaj told BBC Radio: "I was maybe three kilometres (two miles) away. I could see them explode and hear them but somehow I was safe. "It is freaking for the nerves but I quickly understood that if I play music while it is happening, it is much better than just hearing it happening. Somehow my brain shifts and I focus totally on the music." Asked if he thought his composition was in questionable taste, he said: "Throwing bombs on buses with kids escaping from their ...