By Piya Sinha-Roy LOS ANGELES (Reuters) – Pop singer Justin Timberlake scored his second chart-topping album this year on Wednesday as his latest record debuted at No. 1 on the weekly Billboard 200 album chart, capping the singer's successful return to the musical spotlight. Timberlake's "The 20/20 Experience – 2 of 2," which follows the first set of 10 songs released in March this year, sold 350,000 copies in its first week, according to figures compiled by Nielsen SoundScan. The first installment of "The 20/20 Experience" sold 968,000 copies, the biggest opening week sales of the year so …
