Three music apps - Aria, Beat and Coda - feature songs in three languages: Hindi, Tamil and Telugu. The bar chart gives, for each app and each language, the exact number of songs that app features in that language (complete data). The following additional facts are known. 1. 40 songs in all were featured by at least one of the three apps. 2. Exactly two songs were featured by all three apps, and both were in Hindi. 3. Exactly one song was featured by both Beat and Coda but not Aria, and it was in Tamil. 4. Exactly one song was featured by both Aria and Coda but not Beat, and it was in Telugu.
How many songs in Hindi were featured by at least one of the three apps?