Imogen Heap and the Holst Singers at the Roundhouse

Living in the city is alternately an experience of exhilarating interconnectedness and one of unbearable loneliness. On the good days, you share a sympathetic smile with your fellow commuters on a packed Tube train, you trade easy banter with the cashier at the Sainsbury’s checkout, and you feed off the buzz of the crowd as you head out for a night in Shoreditch.

Raucous cheering and stamping accompanied Eric Whitacre’s entrance and he looked every bit the part of rock star as he charismatically took to the mic to introduce this evening’s concert. Never before, he told us, had he been to a choral concert that made him seriously consider stagediving.

I thought it best, given the sub-zero temperatures, to get out of the house and save on heating bills, and so I consulted www.bachtrack.com to see what might be on, and was pleasantly surprised to see that Sibelius 2nd was to be performed in a local church.

Jonny Greenwood’s genre-defying music is given a powerful performance by violinist Daniel Pioro and members of The Hallé Orchestra under Hugh Tieppo-Brunt.

An inventive programme frames new music by a genre-defying composer and guitarist in a striking late-night concert.

Glass and Bowie meet again in the concluding chapter of his Berlin Trilogy symphonies at the Royal Festival Festival