I recently had the pleasure of sitting in the studio with Chloe Veltman, host of the KALW radio show "Voicebox." Our topic of the evening was singing actresses. More specifically, we discussed the staggering talents of Barbra Streisand and Meryl Streep, both of whom apply their prodigious acting skills to some marvelous song performances. Of course Streisand is as well known as a singer as she is an actress, but Streep is full of wonderful surprises as a singer.