Medici.tv is live-streaming Mahler Symphony No.2 from Mexico City right now - the LPO is on tour there and the conductor is Alondra de la Parra. Sounds absolutely amazing. (Btw, my OH is not playing - he took the Mexico tour off and is safely at home watching in his pjs.) Catch it here, this minute.
Rumbles from the tour across the Atlantic suggest that the orchestra has taken to de la Parra in a big way. The Mahler, what we've heard so far, would seem to bear this out.
You can find out more about her on her website - and listen to performances from the tour there too!